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Akinaga Hiroyuki
| Faculty of Information Science and Technology | Professor |
| Institute for Frontier Education and Research on Semiconductors | Professor |
Hiroyuki (Hiro) Akinaga was born in Tokyo, Japan, on June 27th, 1964. He received the B.E., M.E. and Ph. D. degrees from the University of Tsukuba, Ibaraki, Japan, in 1987, 1989 and 1992, respectively. From 1992 to 2002, he was a Research Scientist at the Joint Research Center for Atom Technology of National Institute of Advanced Industrial Science and Technology (AIST), Ibaraki, Japan. From 1997 to 1998, he was a Visiting Scientist at Imec, Leuven, Belgium. He was appointed to a professorship in the University of Tokyo (2001), Tokyo Institute of Technology (2002-2004), and Osaka University (2008, 2010). Currently, he is Principal Research Manager, Nanoelectronics Research Institute, AIST. He is also a Convener, TC113 (Nanotechnology standardization for electrical and electronic products and systems), International Electrotechnical Commission (IEC), a project PI of “Research and Development of Artificial Neural Network system for Inference” of New Energy and Industrial Technology Development Organization (NEDO) and a Deputy Research Supervisor of Strategic Basic Research Programs, “Scientific Innovation for Energy Harvesting Technology”, of Japan Science and Technology Agency (JST). His current interests include Nano-electronics and Open innovation platform.
Researcher basic information
■ Degree■ URL
researchmap URLホームページURL■ Various IDs
ORCID IDResearcher ID
- L-8623-2016
Research Keyword
- 酸化物エレクトロニクス
- Resistive Random Access Memory (ReRAM)
- memristor
- 機能性酸化物
- Physical reservoir computing
- 微細加工
- AIdevice
- エネルギーハーベスティング
- electric double layer
- Ionic Liquid
- スピン流
- スピンMOSFET
- スピン注入
- 電子デバイス
- ハーフメタル
- スピン依存伝導
- スピン蓄積
- スピンFET
- スピントロニクス
- トンネル磁気抵抗効果
- スピン軌道相互作用
- ヘテロ構造
- MRAM
- スピンエレクトロニクス
- 非線形磁気伝導
- ハイブリッド構造
- 磁性
- 金属
- 半導体
- 半導体物性
- ナノ材料
- 磁気抵抗スイッチ効果
- 磁気抵抗効果
- MBE,エピタキシャル
- Nanotechnology/Materials, Nanomaterials, Nanofabrication
- Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering), Electron device and electronic equipment
- Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering), Electric and electronic materials, Artificial Intelligence
- Nanotechnology/Materials, Applied physical properties, Energy harvesting
- Nanotechnology/Materials, Material processing and microstructure control, Nanofabrication
Career
■ CareerCareer
- May 2025 - Present
Hokkaido University, Faculty of Information Science and Technology, Professor - 2020 - Mar. 2025
National Institute of Advanced Industrial Science and Technology, Device Technology Research Institute, Principal Research Manager, Japan - 2013 - 2019
産業技術総合研究所, ナノエレクトロニクス研究部門, 総括研究主幹 - 2011 - 2013
(独)産業技術総合研究所ナノデバイスセンター, センター長 - 2008 - 2011
(独)産業技術総合研究所 ナノ電子デバイス研究センター, 副研究センター長 - 2007 - 2008
National Institute of Advanced Industrial Science and Technology, 研究グループ長 - 2007
(独)産業技術総合研究所 ナノテクノロジー研究部門, 研究グループ長 - 2004 - 2005
National Institute of Advanced Industrial Science and Technology, 研究グループ長 - 2002 - 2005
National Institute of Advanced Industrial Science and Technology, 研究員 - 2005
National Institute of Advanced Industrial Science and Technology, グループ長 - 2004
National Institute of Advanced Industrial Science and Technology, 主任研究員 - 2002 - 2003
National Institute of Advanced Industrial Science and Technology, 主任研究員
Research activity information
■ Papers- Fabrication of Low-Power Consumption Hydrogen Sensor Based on TiOx/Pt Nanocontacts via Local Atom Migration
Yasuhisa Naitoh; Hisashi Shima; Hiroyuki Akinaga
Nanomaterials, 25 Jul. 2025
English, Scientific journal, - Green materials in semiconductors: perspective from the IRDS beyond-CMOS roadmap
Akiko Ueda; Hiroyuki Akinaga; Sapan Agarwal; Joseph A Hagmann; Shamik Das; Matthew J Marinella; An Chen
Nanotechnology, 07 Apr. 2025
Scientific journal,
- Current response design via functional group substitution for cation structure in high-performance ionic liquid-based physical reservoir device
Yuki Kubo; Shunsuke Miyamoto; Hisashi Shima; Toshiki Nokami; Yasuhisa Naitoh; Hiroyuki Akinaga; Tomoyuki Mochida; Yumeng Zheng; Kentaro Kinoshita
Japanese Journal of Applied Physics, 01 Mar. 2025
Scientific journal - Temperature-Robust Short-Term Memory Stored at Electrode/Ionic Liquid Interface and Its Applications for Energy-Efficient Information Processing
Yuki Kubo; Shunsuke Miyamoto; Hisashi Shima; Toshiyuki Itoh; Toshiki Nokami; Yasuhisa Naitoh; Hiroyuki Akinaga; Yumeng Zheng; Kentaro Kinoshita
ECS Meeting Abstracts, 22 Nov. 2024
Scientific journal - Quantitative Relationship Between Data Dimensionality and Information Processing Capability Revealed via Principal Component Analysis for Non-Linear Current Waveforms With Non-Ideality Derived From Ionic Liquid-Based Physical Reservoir Device
Yuki Kubo; Masaharu Yonezawa; Hisashi Shima; Yasuhisa Naitoh; Hiroyuki Akinaga; Toshiki Nokami; Toshiyuki Itoh; Kentaro Kinoshita
IEEE Access, 2024
Scientific journal - Strategies for Development of High Performance Thermoelectric Materials
Takao Mori; Atsuko Kosuga; Hiroyuki Akinaga
Thermoelectric Micro/Nano Generators: Fundamental Physics, Materials and Measurements, 3, 15, 01 Jan. 2024
In book - Characterization of Information-Transmitting Materials Produced in Ionic Liquid-based Neuromorphic Electrochemical Devices for Physical Reservoir Computing
Sato, Dan; Shima, Hisashi; Matsuo, Takuma; Yonezawa, Masaharu; Kinoshita, Kentaro; Kobayashi, Masakazu; Naitoh, Yasuhisa and Akinaga, Hiroyuki; Miyamoto, Shunsuke; Nokami, Toshiki; Itoh, Toshiyuki
ACS APPLIED MATERIALS & INTERFACES, 2023
Scientific journal - Visualizing the Local Composition Changes during Resistive Switching in Planar TaOx-ReRAMs
Naitoh, Yasuhisa; Shima, Hisashi; Akinaga, Hiroyuki
ACS APPLIED ELECTRONIC MATERIALS, 2023
Scientific journal - Structural analysis of graphene-capped copper by spectroscopic ellipsometry for humidity reliability assessment
Nakajima, Shun; Wasai, Yoko; Kawahara, Kenji; Nabatova-Gabain, Nataliya; Gomasang, Ploybussara; Ago, Hiroki; Akinaga, Hiroyuki; Ueno, Kazuyoshi
JAPANESE JOURNAL OF APPLIED PHYSICS, 62, SC, SC1092, SC1092, IOP Publishing, 31 Jan. 2023
Scientific journal, Abstract
Reliability of graphene-capped copper (Gr/Cu) against humidity is assessed by spectroscopic ellipsometry (SE). Changes in the volume fraction of crystalline Gr in a single-layer graphene (SLG) and a tri-layer graphene (TLG), and also Cu-oxide thicknesses under the Gr cap were characterized by SE before and after humidity reliability test. It was found that TLG has a higher moisture resistance than SLG with less changes in the crystalline Gr volume fraction and thickness than those of SLG, and it leads to the reduction in Cu-oxide thickness and the uniformity under the Gr-cap. The results were consistent with the analysis results by X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy excluding variations due to differences in analysis areas of each method. Since detail structure changes such as Gr quality and thickness can be evaluated non-destructively, SE is considered as a promising method for the detail analysis of Gr/Cu structures. - Operando observation of analog resistance change in a buried metal/oxide interface by a laser-excited photoemission electron microscope
Okuda, Y.; Kawakita, J.; Taniuchi, T.; Shima, H.; Shimizu, A.; Naitoh, Y.; Kinoshita, K.; Akinaga, H.; Shin, S.
JAPANESE JOURNAL OF APPLIED PHYSICS, 2022
Scientific journal - Memristive Materials, Devices, and Systems
Akinaga, Hiroyuki
JAPANESE JOURNAL OF APPLIED PHYSICS, 2022
Scientific journal - Temperature Dependence of Current-Voltage Characteristics of Ionic Liquid Type Intelligent Connection Device
Masakazu Kobayashi; Yasumitsu Orii; Hisashi Shima; Yasuhisa Naitoh; Hiroyuki Akinaga; Dan Sato; Takuma Matsuo; Kentaro Kinoshita; Toshiki Nokami; Toshiyuki Itoh
6TH IEEE ELECTRON DEVICES TECHNOLOGY AND MANUFACTURING CONFERENCE (EDTM 2022), 282, 284, 2022
English, International conference proceedings - High-speed hydrogen sensor fabricated using a platinum/titanium oxide nanocontact
Naitoh, Yasuhisa; Sumiya, Touru; Shima, Hisashi; Akinaga, Hiroyuki
SENSORS AND ACTUATORS B-CHEMICAL, 371, Nov. 2022
English, Scientific journal - Low-Frequency-Noise Spectroscopy of TaOx-based Resistive Switching Memory
Hiroyuki Akinaga
Advanced Electronic Materials, 8, 8, Aug. 2022
English, Scientific journal - Temperature Driven Current-Voltage Characteristics of Ionic Liquid Type Intelligent Connection Device
Kobayashi, Masakazu; Orii, Yasumitsu; Shima, Hisashi; Naitoh, Yasuhisa; Akinaga, Hiroyuki; Sato, Dan; Matsuo, Takuma and Kinoshita, Kentaro; Nokami, Toshiki; Itoh, Toshiyuki
IEEE JOURNAL OF THE ELECTRON DEVICES SOCIETY, 10, 893, 897, Institute of Electrical and Electronics Engineers (IEEE), 2022
Scientific journal - Dynamic Nonlinear Behavior of Ionic Liquid-Based Reservoir Computing Devices
Matsuo, Takuma; Sato, Dan; Koh, Sang-Gyu; Shima, Hisashi and Naitoh, Yasuhisa; Akinaga, Hiroyuki; Itoh, Toshiyuki; Nolami, Toshiyuki; Kobayashi, Masakazu; Kinoshita, Kentaro
ACS APPLIED MATERIALS & INTERFACES, 14, 32, 36890, 36901, American Chemical Society (ACS), 26 Jul. 2022
Scientific journal - Reservoir computing with dielectric relaxation at an electrode-ionic liquid interface
Hiroyuki Akinaga
Scientific Reports, 12, 1, Dec. 2022
Scientific journal - Memristors With Controllable Data Volatility by Loading Metal Ion-Added Ionic Liquids
Hiroshi Sato; Hisashi Shima; Toshiki Nokami; Toshiyuki Itoh; Yusei Honma; Yasuhisa Naitoh; Hiroyuki Akinaga; Kentaro Kinoshita
FRONTIERS IN NANOTECHNOLOGY, 3, Mar. 2021
English, Scientific journal - Liquid-Solid Hybrid Memory Device Achieved by Unique Features of Ionic Liquids
Hiroyuki Akinaga
IEEE Access, 9, 71013, 71021, 2021
Scientific journal - Control of the data-retention characteristics of ionic-liquid conducting-bridge memory by designing device structures based on corrosion mechanisms
Hiroyuki Akinaga
Applied Physics Express, 14, 8, 084005, 084005, 01 Aug. 2021
Scientific journal - Formation and dissolution of conductive channels in an Ag2S-islands network
Keita Ojima; Tsuyoshi Hasegawa; Yasuhisa Naitoh; Hisashi Shima; Hiroyuki Akinaga
JAPANESE JOURNAL OF APPLIED PHYSICS, 59, Aug. 2020
English, Scientific journal - Initial stage of Schottky barrier formation of ferromagnetic MnSb(0001) films on GaAs(111)B
M. Oshima; M. Shuzo; K. Ono; H. Fujioka; Y. Watanabe; S. Miyanishi; H. Akinaga
Applied Surface Science, 130-132, 892, 898, Jun. 2020, [Peer-reviewed]
Scientific journal - Recent advances and future prospects in energy harvesting technologies
Hiroyuki Akinaga
Japanese Journal of Applied Physics, 2020
Scientific journal - Reliable operation of a molecular-gap atomic switch in a vacuum achieved by covering with an ionic liquid
Hiroyuki Akinaga
Japanese Journal of Applied Physics, 59, Jun. 2020
English, Scientific journal - Operando observation of resistive switching in a resistive random-access memory by laser-excited photoemission electron microscope
Hiroyuki Akinaga
Japanese Journal of Applied Physics, 59, Apr. 2020
English, Scientific journal - Investigation of Statistical Metal-Insulator Transition Properties of Electronic Domains in Spatially Confined VO2Nanostructure
Hiroyuki Akinaga
Crystals, 10, 8, 631, 631, 22 Jul. 2020
Scientific journal - Single-Molecular Bridging in Static Metal Nanogap Electrodes Using Migrations of Metal Atoms
Hiroyuki Akinaga
The Journal of Physical Chemistry C, 124, 25, 14007, 14015, 25 Jun. 2020, [Peer-reviewed]
Scientific journal - Feedback Electromigration Assisted by Alternative Voltage Operation for the Fabrication of Facet-Edge Nanogap Electrodes
Hiroyuki Akinaga
ACS Applied Nano Materials, 3, 5, 4077, 4083, 22 May 2020, [Peer-reviewed]
Scientific journal - アナログ抵抗変化素子を用いた脳型回路
Akinaga H.; Asai T.
OYO BUTURI, 89, 1, 41, 45, 01 Jan. 2020, [Peer-reviewed], [Invited]
Japanese, Scientific journal - Three-dimensional Nanoconfinement Supports Verwey Transition in Fe3O4 Nanowire at 10 nm length scale
R. Rakshit; A. N. Hattori; Y. Naitoh; H. Shima; H. Akinaga; H. Tanaka
Nano Lett., 19, 8, 5003, 5010, Aug. 2019, [Peer-reviewed]
English, Scientific journal - Impact of Oxygen Reservoir Layer on Analog Resistance Change Behavior in TaOx Resistance Analog Neuromorphic Device
Hisashi Shima; Makoto Takahashi; Yasuhisa Naitoh; Hiroyuki Akinaga
2019 Electron Devices Technology and Manufacturing Conference, EDTM 2019, 166, 168, Institute of Electrical and Electronics Engineers Inc., 01 Mar. 2019
English, International conference proceedings - Reinforcement Learning System Comprising Resistive Analog Neuromorphic Devices
Song-Ju Kim; Kaori Ohkoda; Masashi Aono; Hisashi Shima; Makoto Takahashi; Yasuhisa Naitoh; Hiroyuki Akinaga
2019 IEEE INTERNATIONAL RELIABILITY PHYSICS SYMPOSIUM (IRPS), 2019
English, International conference proceedings - Electrode material dependence of resistive switching behavior in Ta2O5 resistive analog neuromorphic device
Hisashi Shima; Makoto Takahashi; Yasuhisa Naitoh; Hiroyuki Akinaga
2018 IEEE 2ND ELECTRON DEVICES TECHNOLOGY AND MANUFACTURING CONFERENCE (EDTM 2018), 62, 64, 2018
English, International conference proceedings - High-speed Analog Resistance Change in TaOx Synthesized by Reactive Sputtering
Hisashi Shima; Makoto Takahashi; Yasuhisa Naitoh; Hiroyuki Akinaga
NONVOLATILE MEMORIES 6 -AND- SURFACE CHARACTERIZATION AND MANIPULATION FOR ELECTRONIC APPLICATIONS, 86, 3, 3, 10, 2018
English, International conference proceedings - Electrode Material Dependence of Resistance Change Behavior in Ta2O5 Resistive Analog Neuromorphic Device
Hisashi Shima; Makoto Takahashi; Yasuhisa Naitoh; Hiroyuki Akinaga
IEEE JOURNAL OF THE ELECTRON DEVICES SOCIETY, 6, 1, 1220, 1226, 2018
English, Scientific journal - Direct Observation of Chemical States in ReRAM by Laser-based Photoemission Electron Microscopy
Toshiyuki Taniuchi; Junpei Kawakita; Hisashi Shima; Yasuhisa Naito; Hiro Akinaga; Shik Shin
2018 IEEE 2ND ELECTRON DEVICES TECHNOLOGY AND MANUFACTURING CONFERENCE (EDTM 2018), 119, 121, 2018
English, International conference proceedings - From Memory to Sensor: Ultralow Power and High Selectivity Hydrogen Sensor Based on ReRAM Technology
Hiroyuki Akinaga
IEEE Transactions on Electron Devices, 65, 11, 5189, 5194, Nov. 2018
English, Scientific journal - From Memory to Sensor: ultra-Low Power and High Selectivity Hydrogen Sensor Based on ReRAM Technology
Zhiqiang Wei; Kazunari Homma; Koji Katayama; Ken Kawai; Satoru Fujii; Yasuhisa Naitoh; Hisashi Shima; Hiroyuki Akinaga; Satoru Ito; Shinichi Yoneda
2018 IEEE SYMPOSIUM ON VLSI TECHNOLOGY, 63, 64, 2018
English, International conference proceedings - Thermal robustness evaluation of nonvolatile memory using Pt nanogaps
Naitoh, Yasuhisa; Suga, Hiroshi; Abe, Takuya; Otsu, Kazuki; Umeta, Yukiya; Sumiya, Touru; Shima, Hisashi; Tsukagoshi, Kazuhito; Akinaga, Hiroyuki
Applied Physics Express, 11, 8, 2018, [Peer-reviewed]
English, Scientific journal - Focus on advanced materials for energy harvesting: prospects and approaches of energy harvesting technologies
Akinaga, Hiroyuki; Fujita, Hiroyuki; Mizuguchi, Masaki; Mori, Takao
Science and Technology of Advanced Materials, 19, 1, 543, 544, 2018, [Peer-reviewed]
English, Scientific journal - Investigation of switching mechanism in HfOx-ReRAM under low power and conventional operation modes
Wei Feng; Hisashi Shima; Kenji Ohmori; Hiroyuki Akinaga
SCIENTIFIC REPORTS, 6, Dec. 2016, [Peer-reviewed]
English, Scientific journal - Investigations of electrical transport properties of individual carbon nanotubes with nanoprober
Wei Feng; Kazumi Hayama; Hiroyuki Akinaga
JAPANESE JOURNAL OF APPLIED PHYSICS, 55, 6, 3, 3, Jun. 2016, [Peer-reviewed]
English, Scientific journal - Introduction to Nanoionic Elements for Information Technology
Hiroyuki Akinaga
Resistive Switching: from Fundamentals of Nanoionic Redox Processes to Memristive Device Applications, 2016
Scientific journal - Impact of inserted Ta ultrathin layer and postdeposition annealing on the forming voltage of Ir/Ti/Ta/HfO2/TiN/Ti/SiO2/Si resistive switching devices
Shutaro Asanuma; Hisashi Shima; Masashi Yamazaki; Kazumi Hayama; Nobuhiro Hata; Hiroyuki Akinaga
JAPANESE JOURNAL OF APPLIED PHYSICS, 54, 4, 3, Apr. 2015, [Peer-reviewed]
English, Scientific journal - Material dependence of magnetic force microscopy performance using carbon nanotube probes: Experiments and simulation
H. Kuramochi; H. Asada; T. Uzumaki; H. Yui; M. Iitake; F. Takano; H. Akinaga; T. Manago
JOURNAL OF APPLIED PHYSICS, 115, 9, 6, Mar. 2014, [Peer-reviewed]
English, Scientific journal - Non-volatile RRAM based on functional oxides: Toward the highly-reliable operation
Hiroyuki Akinaga; Hisashi Shima; Yukio Tamai; Nobuyoshi Awaya
Journal of the Institute of Electronics, Information and Communication Engineers, 97, 3, 198, 204, Institute of Electronics Information Communication Engineers, 2014
Japanese, Scientific journal - Open foundry to spur open-innovation - Establishment of a foundry to realize an innovative cooperation platform and development of its sustainable management strategy
Hiro Akinaga
Synthesiology, 7, 1, 16, 26, Nat. Inst. of Adv. Industrial Science and Technology (AIST), 2014, [Peer-reviewed]
English, Scientific journal - Highly Oriented Polycrystalline Cu2O Film Formation Using RF Magnetron Sputtering Deposition for Solar Cells
S. Noda; H. Shima; H. Akinaga
IRAGO CONFERENCE 2013, 1585, 9, 20, 2014, [Peer-reviewed]
English, International conference proceedings - Design of ReRAM Cell Structure by Metal Buffer and Contact Engineering via First-Principles Transport Calculations
Hisao Nakamura; Takehide Miyazaki; Kengo Nishio; Hisashi Shmia; Hiroyuki Akinaga; Yoshihiro Asai
2014 INTERNATIONAL WORKSHOP ON COMPUTATIONAL ELECTRONICS (IWCE), 3, 3, 2014, [Peer-reviewed]
English, International conference proceedings - First-principles modeling for current-voltage characteristics of resistive random access memories
Takehide Miyazaki; Hisao Nakamura; Kengo Nishio; Hisashi Shima; Hiroyuki Akinaga; Yoshihiro Asai
Journal of Mechanics, 1562, 3, Cambridge University Press, 22 Apr. 2013, [Peer-reviewed]
English, Scientific journal - First-principles modeling for current-voltage characteristics of resistive random access memories
Takehide Miyazaki; Hisao Nakamura; Kengo Nishio; Hisashi Shima; Hiroyuki Akinaga; Yoshihiro Asai
Materials Research Society Symposium Proceedings, 1562, Materials Research Society, 2013, [Peer-reviewed]
English, International conference proceedings - Research updates: The three M's (materials, metrology, and modeling) together pave the path to future nanoelectronic technologies
Sean W. King; Harsono Simka; Dan Herr; Hiro Akinaga; Mike Garner
APL Materials, 1, 4, 2013, [Peer-reviewed]
English, Scientific journal - Recent Advances and Future Prospects in Functional-Oxide Nanoelectronics: The Emerging Materials and Novel Functionalities that are Accelerating Semiconductor Device Research and Development
Hiroyuki Akinaga
Japanese Journal of Applied Physics - Special Issues, 52, 10, 12, Oct. 2013, [Peer-reviewed]
English, Scientific journal - Cu2O/ZnO Heterojunction Solar Cells Fabricated by Magnetron-Sputter Deposition Method Films Using Sintered Ceramics Targets
S. Noda; H. Shima; H. Akinaga
IRAGO CONFERENCE 2012, 433, 2013, [Peer-reviewed]
English, International conference proceedings - In-situ Nanoscale Characterization of Annealing Effect on TiN/Ti/HfOx/TiN Structure for Resistive Random Access Memory (ReRAM)
Hisashi Shima; Hiro Akinaga
2012 12TH IEEE CONFERENCE ON NANOTECHNOLOGY (IEEE-NANO), 6, 6, 2012, [Peer-reviewed]
English, International conference proceedings - The advantages of the magnetic structure in ferromagnetic-film-coated carbon nanotube probes
T. Manago; H. Asada; T. Uzumaki; F. Takano; H. Akinaga; H. Kuramochi
NANOTECHNOLOGY, 23, 3, 035501, 035501, Jan. 2012, [Peer-reviewed]
English, Scientific journal - Mechanism of the performance improvement of TiO2-x-based field-effect transistor using SiO2 as gate insulator
Ni Zhong; Hisashi Shima; Hiro Akinaga
AIP ADVANCES, 1, 3, Sep. 2011, [Peer-reviewed]
English, Scientific journal - Spin and orbital magnetic moments of molecular beam epitaxy γ'-Fe4N films on LaAlO3(001) and MgO(001) substrates by x-ray magnetic circular dichroism
Keita Ito; Geun Hyoung Lee; Kazunori Harada; Mitsushi Suzuno; Takashi Suemasu; Yukiharu Takeda; Yuji Saitoh; Mao Ye; Akio Kimura; Hiro Akinaga
Appl. Phys. Lett., 98, 10, 102507-1, 102507-3, Mar. 2011, [Peer-reviewed]
English, Scientific journal - Magnetoresistance characteristics of Fe3Si/CaF2/Fe3Si heterostructures grown on Si(111) by molecular beam epitaxy
K. Harada; K. S. Makabe; H. Akinaga; T. Suemasu
ASIA-PACIFIC CONFERENCE ON SEMICONDUCTING SILICIDES SCIENCE AND TECHNOLOGY TOWARDS SUSTAINABLE OPTOELECTRONICS (APAC-SILICIDE 2010), 11, 15, 18, 2011, [Peer-reviewed]
English, International conference proceedings - Room temperature magnetoresistance in Fe3Si/CaF2/Fe3Si MTJ epitaxially grown on Si(111)
K. Harada; K. S. Makabe; H. Akinaga; T. Suemasu
2ND INTERNATIONAL SYMPOSIUM ON ADVANCED MAGNETIC MATERIALS AND APPLICATIONS (ISAMMA 2010), 266, 2011, [Peer-reviewed]
English, International conference proceedings - Switching device
Akinaga Hiroyuki; Yasuda Shuichiro; Inoue Isao; Takagi Hidenori
Jan. 2011, [Peer-reviewed]
US Patent 7,863,594 - Epitaxial growth of ferromagnetic γ'-Fe4N films on LaAlO3(001), SrTiO3(001) and MgO(001) substrates by molecular beam epitaxy
K.Ito;G; H. Lee; M., Suzuno; H., Akinaga; and; T. Suemasu; 末益, 崇
Journal of Crystal Growth, 322, 63, Jan. 2011, [Peer-reviewed]
English, Scientific journal - Origin of perpendicular magnetic anisotropy and evolution of magnetic domain structure of amorphous Pr-TM-B (TM=Fe, Co) films
W. Y. Zhang; H. Shima; F. Takano; M. Takenaka; M. Yamazaki; K. Masuda; H. Akinaga; T. Nagahama; S. Nimori
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 322, 8, 900, 908, Apr. 2010, [Peer-reviewed]
English, Scientific journal - High-temperature process endurance of oxide/electrode stacking structure for resistance random access memory
Hisashi Shima; Takashi Nakano; Hiroyuki Akinaga
Materials Research Society Symposium Proceedings, 1250, 245, 250, Materials Research Society, 2010
English, International conference proceedings - CoOx-RRAM memory cell technology using recess structure for 128Kbits memory array
Suguru Kawabata; Mitsuru Nakura; Shinobu Yamazaki; Takahiro Shibuya; Yushi Inoue; Junya Onishi; Yoshiaki Tabuchi; Yukio Tamai; Yoshifumi Yaoi; Kazuya Ishihara; Yoshiji Ohta; Hisashi Shima; Hiro Akinaga; Natsuki Fukuda; Hidenao Kurihara; Yoshiaki Yoshida; Yutaka Kokaze; Yutaka Nishioka; Koukou Suu; Kazuya Nakayama; Akio Kitagawa; Shigeo Ohnishi; Nobuyoshi Awaya
2010 IEEE International Memory Workshop, IMW 2010, 2010, [Peer-reviewed]
English, International conference proceedings - Determining the low-coercivity temperature coefficient in FePt (fct)/FePt (fcc) nanocomposite films
W. Y. Zhang; H. Shima; F. Takano; H. Akinaga; S. Nimori
INTERNATIONAL CONFERENCE ON MAGNETISM (ICM 2009), 200, 2010, [Peer-reviewed]
English, International conference proceedings - Structure-property relationship of nanocrystalline Pr2Co14B-based hard magnetic film
W. Y. Zhang; H. Shima; F. Takano; H. Akinaga; S. Nimori
JOURNAL OF APPLIED PHYSICS, 106, 11, Dec. 2009, [Peer-reviewed]
English, Scientific journal - Enhancement in ordering of Fe50Pt50 film caused by Cr and Cu additives
W. Y. Zhang; H. Shima; F. Takano; H. Akinaga; X. Z. Yu; T. Hara; W. Z. Zhang; K. Kimoto; Y. Matsui; S. Nimori
JOURNAL OF APPLIED PHYSICS, 106, 3, Aug. 2009, [Peer-reviewed]
English, Scientific journal - Rectifying Polarity Switch of Pt/TiO(2-x)/Pt
Ni Zhong; Hisashi Shima; Hiro Akinaga
FUNCTIONAL METAL-OXIDE NANOSTRUCTURES, 1174, 101, 105, 2009, [Peer-reviewed]
English, International conference proceedings - Direct Observation of a Systematic Change of the Magnetic-Domain Structure With Temperature in 50-nm-MnAs/GaAs(001)
J. B. Kim; Y. P. Lee; K-S. Ryu; S. -C. Shin; K. W. Kim; J. Y. Rhee; H. Akinaga
IEEE TRANSACTIONS ON MAGNETICS, 44, 11, 3241, 3243, Nov. 2008, [Peer-reviewed]
English, Scientific journal - First Principles Based Investigation of Materials for Resistive RAM
Hirofumi Kishi; Tomoya Kishi; Wilson Agerico Dino; Emi Minamitani; Hiro Akinaga; Hiroshi Nakanishi; Hideaki Kasai
JOURNAL OF COMPUTATIONAL AND THEORETICAL NANOSCIENCE, 5, 10, 1976, 1979, Oct. 2008, [Peer-reviewed]
English, Scientific journal - First-principles calculations-based model for the reactive ion etching of metal oxide surfaces
Melanie David; Rifki Muhida; Tanglaw Roman; Hiroshi Nakanishi; Wilson Dino; Hideaki Kasai; Fumiyoshi Takano; Hisashi Shima; Hiro Akinaga
VACUUM, 83, 3, 599, 601, Oct. 2008, [Peer-reviewed]
English, Scientific journal - Direct observation on the temperature-dependent change of magnetic domains in epitaxial MnAs film on GaAs (001)
JinBae Kim; YoungPak Lee; Kwang-Su Ryu; Sung-Chul Shin; Hiro Akinaga; Joo Yull Rhee
ULTRAMICROSCOPY, 108, 10, 1066, 1069, Sep. 2008, [Peer-reviewed]
English, Scientific journal - Reactive ion etching of FePt using inductively coupled plasma
Tomomi Kanazawa; Kohei Ono; Masato Takenaka; Masashi Yamazaki; Kenichi Masuda; Shiho Cho; Takayuki Wakayama; Fumiyoshi Takano; Hiro Akinaga
APPLIED SURFACE SCIENCE, 254, 23, 7918, 7920, Sep. 2008, [Peer-reviewed]
English, Scientific journal - Consistent anisotropic behaviors between the magnetic and the magneto-optical properties in Zn1-xCoxO thin films
J. W. Lee; S. Kuroda; K. Takita; F. Takano; H. Akinaga
JOURNAL OF THE KOREAN PHYSICAL SOCIETY, 53, 1, 309, 312, Jul. 2008, [Peer-reviewed]
English, Scientific journal - Local chemical state change in Co-O resistance random access memory
Hisashi Shima; Fumiyoshi Takano; Hidenobu Muramatsu; Masashi Yamazaki; Hiroyuki Akinaga; Akinori Kogure
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS, 2, 3, 99, 101, Jun. 2008, [Peer-reviewed]
English, Scientific journal - Local structural, magnetic and magneto-optical properties of Mn-doped SiC films prepared on a 3C-SiC(001) wafer
Wenhong Wang; Fumiyoshi Takano; Hironori Ofuchi; Hiro Akinaga
NEW JOURNAL OF PHYSICS, 10, May 2008, [Peer-reviewed]
English, Scientific journal - The pinning role of nonferromagnetic beta phase in the domain wall motion of ferromagnetic MnAs film on GaAs(001)
Kwang-Su Ryu; Hun-Sung Lee; Sung-Chul Shin; Hiro Akinaga
JOURNAL OF APPLIED PHYSICS, 103, 7, Apr. 2008, [Peer-reviewed]
English, Scientific journal - Two-dimensional critical scaling behavior of Barkhausen avalanches (invited)
Sung-Chul Shin; Kwang-Su Ryu; Dong-Hyun Kim; Hiro Akinaga
JOURNAL OF APPLIED PHYSICS, 103, 7, Apr. 2008, [Peer-reviewed]
English, Scientific journal - Magneto-optical properties of n-type modulation-doped (Cd,Cr)Te quantum well
Fumiyoshi Takano; Takayuki Nishizawa; JeungWoo Lee; Shinji Kuroda; Yasutaka Imanaka; Tadashi Takamasu; Hiro Akinaga
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 40, 5, 1166, 1168, Mar. 2008, [Peer-reviewed]
English, Scientific journal - Nonpolar resistance switching of metal/binary-transition-metal oxides/metal sandwiches: Homogeneous/inhomogeneous transition of current distribution
I. H. Inoue; S. Yasuda; H. Akinaga; H. Takagi
Physical Review B - Condensed Matter and Materials Physics, 77, 3, 03 Jan. 2008, [Peer-reviewed]
English, Scientific journal - Density functional theory based evaluations of the reactive ion etchin: Process model for TiO
2 (anatase) thin film
Hirofumi Kishi; Nobuki Ozawa; Melanie Y. David; Tanglaw A. Roman; Nelson B. Arboleda; Wilson A.T. Diño; Hiroshi Nakanishi; Hideaki Kasai; Fumiyoshi Takano; Hisashi Shima; Hiro Akinaga
Journal of the Vacuum Society of Japan, 51, 6, 397, 400, 2008, [Peer-reviewed]
Japanese, Scientific journal - Substantial reduction of reset current in CoO RRAM with Ta bottom electrode
Hisashi Shima; Fumiyoshi Takano; Yukio Tamai; Hidenobu Muramatsu; Hiroyuki Akinaga; Isao H. Inoue; Hidenori Takagi
MATERIALS SCIENCE AND TECHNOLOGY FOR NONVOLATILE MEMORIES, 1071, 75, +, 2008, [Peer-reviewed]
English, International conference proceedings - Nonpolar resistance switching of metal/binary-transition-metal oxides/metal sandwiches: Homogeneous/inhomogeneous transition of current distribution
Inoue, I. H.; Yasuda, S.; Akinaga, H.; Takagi, H.
Physical Review B, 77, 3, 7, 7, Jan. 2008, [Peer-reviewed]
Scientific journal - Direct observation of saw-tooth typed domain wall jumps in epitaxial ferromagnetic MnAs film on GaAs(001)
Kwang-Su Ryu; Hiro Akinaga; Sung-Chul Shin
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 244, 12, 4495, 4498, Dec. 2007, [Peer-reviewed]
English, Scientific journal - Advantages of CNT-MFM probes in observation of domain walls of soft magnetic materials
H. Kuramochi; T. Manago; D. Koltsov; M. Takenaka; M. Iitake; H. Akinaga
SURFACE SCIENCE, 601, 22, 5289, 5293, Nov. 2007, [Peer-reviewed]
English, Scientific journal - Magnetic domain structure of a technically patterned ferromagnetic La0.6Sr0.4MnO3 thin film
M. Kubota; T. Taniuchi; R. Yasuhara; H. Kumigashira; M. Oshima; K. Ono; H. Okazaki; T. Wakita; T. Yokoya; H. Akinaga; M. Lippmaa; M. Kawasaki; H. Koinuma
APPLIED PHYSICS LETTERS, 91, 18, Oct. 2007, [Peer-reviewed]
English, Scientific journal - Applying computational nanomaterials design to the reactive ion etching of NiO thin films - a preliminary investigation
M. David; R. Muhida; T. Roman; S. Kunikata; Wa Dino; H. Nakanishi; H. Kasai; F. Takano; H. Shima; H. Akinaga
JOURNAL OF PHYSICS-CONDENSED MATTER, 19, 36, 365210, 7 pages, Sep. 2007, [Peer-reviewed]
English, Scientific journal - Electrical spin injection in perpendicular magnetized FePt/MgO/GaAs heterostructures at room temperature
Asawin Sinsarp; Takashi Manago; Fumiyoshi Takano; Hiro Akinaga
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, 20, 6, 405, 408, Aug. 2007, [Peer-reviewed]
English, Scientific journal - Inductively coupled plasma-reactive ion etching for beta-FeSi2 film
T. Wakayama; T. Suemasu; M. Yamazaki; T. Kanazawa; H. Akinaga
THIN SOLID FILMS, 515, 22, 8166, 8168, Aug. 2007, [Peer-reviewed]
English, Scientific journal - Epitaxial growth of Fe3Si/CaF2/Fe3Si magnetic tunnel junction structures on CaF2/Si(111) by molecular beam epitaxy
Ken'ichi Kobayashi; Takashi Suemasu; Noriyuki Kuwano; Daisuke Hara; Hiroyuki Akinaga
THIN SOLID FILMS, 515, 22, 8254, 8258, Aug. 2007, [Peer-reviewed]
English, Scientific journal - Resistive switching effect in metal/insulator/metal heterostructures and its application for non-volatile memory
H. Akinaga; H. Shima; F. Takano; I. H. Inoue; H. Takagi
IEEJ TRANSACTIONS ON ELECTRICAL AND ELECTRONIC ENGINEERING, 2, 4, 453, 457, Jul. 2007, [Peer-reviewed]
English, Scientific journal - Characterization of Mn-doped 3C-SiC prepared by ion implantation
Fumiyoshi Takano; Wenhong Wang; Hiro Akinaga; Hironori Ofuchi; Shigeomi Hishiki; Takeshi Ohshima
JOURNAL OF APPLIED PHYSICS, 101, 9, May 2007, [Peer-reviewed]
English, Scientific journal - Epitaxial growth of bcc Mn films on 4H-SIC(0001) by molecular beam epitaxy
Wenhong Wang; Fumiyoshi Takano; Hironori Ofuchi; Hiro Akinaga
JOURNAL OF CRYSTAL GROWTH, 301, 607, 610, Apr. 2007, [Peer-reviewed]
English, Scientific journal - Epitaxial growth and magnetic properties of GaMnNAs
T. Manago; A. Sinsarp; K. Kawaguchi; H. Akinaga
JOURNAL OF CRYSTAL GROWTH, 301, 647, 650, Apr. 2007, [Peer-reviewed]
English, Scientific journal - Power-law scaling behavior in Barkhausen avalanches of ferromagnetic thin films
S.-C. Shin; K.-S. Ryu; D.-H. Kim; S.-B. Choe; H. Akinaga
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 310, 2, 2599, 2603, Mar. 2007, [Peer-reviewed]
English, Scientific journal - Investigation of the micromagnetic structure of MnAs film on GaAs(001)
J. B. Kim; Y. P. Lee; K. S. Ryu; S. C. Shin; H. Akinaga; K. W. Kim
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 310, 2, 1799, 1800, Mar. 2007, [Peer-reviewed]
English, Scientific journal - Design of reactive ion etching process based on ab-initio calculation - The first step-
Shigeno Matsumoto; Wilson A.T. Diño; Melanie Y. David; Rifki Muhida; Tanglaw A. Roman; Shinichi Kunikata; Fumiyoshi Takano; Hiro Akinaga; Hideaki Kasai
Shinku/Journal of the Vacuum Society of Japan, 50, 6, 437, 439, 2007, [Peer-reviewed]
Scientific journal - Nanosecond excitonic spin relaxation in cubic GaN
Atsushi Tackeuchi; Hirotaka Otake; Yusuke Ogawa; Takaftimi Ushiyama; Taisuke Fujita; Fumiyoshi Takano; Hiro Akinaga
PHYSICS OF SEMICONDUCTORS, PTS A AND B, 893, 1335, +, 2007, [Peer-reviewed]
English, International conference proceedings - Fabrication and characterization of n-type modulationdoped (Cd,Cr)Te quantum well
F. Takano; T. Nishizawa; H. Kinjo; J. W. Lee; S. Kuroda; H. Ofuchi; Y. Imanaka; T. Takamasu; G. Kido; K. Takita; H. Akinaga
PHYSICS OF SEMICONDUCTORS, PTS A AND B, 893, 1193, +, 2007, [Peer-reviewed]
English, International conference proceedings - Conductive atomic force microscopy study of silica nanotrench structure
Z. G. Sun; H. Kuramochi; H. Akinaga; H. H. Yu; E. D. Gu
APPLIED PHYSICS LETTERS, 90, 4, Jan. 2007, [Peer-reviewed]
English, Scientific journal - Development and trial measurements of hard X-ray photoelectron emission microscope
T. Taniuchi; T. Wakita; M. Takagaki; N. Kawamura; M. Suzuki; T. Nakamura; K. Kobayashi; M. Kotsugi; M. Oshima; H. Akinaga; H. Muraoka; K. Ono
SYNCHROTRON RADIATION INSTRUMENTATION, PTS 1 AND 2, 879, 1353, +, 2007, [Peer-reviewed]
English, International conference proceedings - Exchange bins effect in Fe films deposited on Si(100) substrates
Wenhong Wang; Fumiyoshi Takano; Masato Takenaka; Hironori Ofuchi; Hiro Akinaga
PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 4, NO 12, 4, 12, 4352, +, 2007, [Peer-reviewed]
English, International conference proceedings - Reproducible resistance switching in Ni/NiO/Ni trilayer
Hisashi Shima; Fumiyoshi Takano; Hiro Akinaga; Isao H. Inoue; Hidenori Takagi
MATERIALS AND PROCESSES FOR NONVOLATILE MEMORIES II, 997, 205, +, 2007, [Peer-reviewed]
English, International conference proceedings - Reactive ion etching of β-FeSi2 film in inductively coupled plasma
T., Wakayama; T., Suemasu; T., Kanazawa; H., Akinaga
Thin Solid Films, 515, 8166-8168, Jan. 2007, [Peer-reviewed]
English, Scientific journal - Effect of magnetic field on the magnetic domain structure of MnAs film on GaAs(001)
J. B. Kim; Y. P. Lee; K. S. Ryu; S. C. Shin; H. Akinaga; K. W. Kim
IEEE TRANSACTIONS ON MAGNETICS, 42, 10, 3249, 3251, Oct. 2006, [Peer-reviewed]
English, Scientific journal - Thickness dependence of magnetic domains of MnAs films
T. Manago; H. Kuramochi; H. Akinaga
SURFACE SCIENCE, 600, 18, 4155, 4159, Sep. 2006, [Peer-reviewed]
English, Scientific journal - Observation of step-induced magnetic domain formation in La1-xSrxMnO3 thin films by photoelectron emission microscopy
T. Taniuchi; H. Kumigashira; M. Oshima; T. Wakita; T. Yokoya; M. Kubota; K. Ono; H. Akinaga; M. Lippmaa; M. Kawasaki; H. Koinuma
APPLIED PHYSICS LETTERS, 89, 11, Sep. 2006, [Peer-reviewed]
English, Scientific journal - Trion motion in modulation-doped magnetic semiconductor quantum well: Control and observation
Fumiyoshi Takano; Takashi Tokizaki; Hiro Akinaga; Shinji Kurod; Koki Takita
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 34, 1-2, 389, 392, Aug. 2006, [Peer-reviewed]
English, Scientific journal - Growth and characterization of Mn-doped cubic-GaN
F Takano; H Ofuchi; J Lee; K Takita; H Akinaga
PHYSICA B-CONDENSED MATTER, 376, 658, 662, Apr. 2006, [Peer-reviewed]
English, Scientific journal - Characterization of room temperature ferromagnetic Mn-Si compound synthesized on SiC substrate
F Takano; H Akinaga; H Ofuchi; S Kuroda; K Takita
JOURNAL OF APPLIED PHYSICS, 99, 8, 0, 0, Apr. 2006, [Peer-reviewed]
English, Scientific journal - Fluorescence EXAFS analysis of local structures around Cr atoms in (Ga,Cr)As
H Ofuchi; M Yamada; J Okabayashi; M Mizuguchi; K Ono; Y Takeda; M Oshima; H Akinaga
PHYSICA B-CONDENSED MATTER, 376, 651, 653, Apr. 2006, [Peer-reviewed]
English, Scientific journal - Ultrafast scanning Kerr microscopy study of magnetization switching of a permalloy square and a ring
X. Zhu; M. R. Freeman; K. Moriyama; T. Sato; F. Takano; H. Akinaga
INTERMAG 2006 - IEEE International Magnetics Conference, 67, 2006, [Peer-reviewed]
English, International conference proceedings - Reactive ion etching of transition-metal alloys
Hiro Akinaga; Fumiyoshi Takano; Shigeno Matsumoto; Wilson A.T. Diño
Shinku/Journal of the Vacuum Society of Japan, 49, 12, 716, 721, 2006, [Peer-reviewed]
Scientific journal - Anisotropy of magnetization and magnetoresistance of (Zn,Co)O films grown by pulsed laser deposition
J. W. Lee; S. Kuroda; F. Takan; H. Akinaga; K. Takita
PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 3, NO 12, 3, 12, 4098, 4101, 2006, [Peer-reviewed]
English, International conference proceedings - Nano-spinelectronics : Materials and Vapor-Phase Growth Processes
AKINAGA Hiro
Earozoru Kenkyu, 20, 2, 97, 102, Japan Association of Aerosol Science and Technology, 20 Jun. 2005
Japanese, This paper deals with some topics on the materials and the vapor-phase growth processes in the field of spinelectronics, where both charge and spin degrees of freedom of an electron realize various storage devices. First, a tunnel magneto-resistance effect is described to show how spinelectronic materials are utilized in the device. Second, a half-metallic ferromagnet, which improves the performance of spinelectronic devices drastically, and its growth process are explained. A molecular-beam epitaxy (MBE), one of non-equilibrium vapor-phase growth processes, plays an indispensable role in synthesizing the material. For example, a new class of half-metallic ferromagnet, previously nonexistent zinc-blende CrAs designed by ab initio calculations, was successfully grown by MBE. - Vortex chirality control in mesoscopic disk magnets observed by a newly developed mobile PEEM system
T Taniuchi; A Oshima; H Akinaga; K Ono
JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA, 144, 741, 744, Jun. 2005, [Peer-reviewed]
English, Scientific journal - Domain structures of nanocrystalline Fe78Si10B12 thin films
ZG Sun; H Kuramochi; H Akinaga
APPLIED SURFACE SCIENCE, 244, 1-4, 489, 493, May 2005, [Peer-reviewed]
English, Scientific journal - Electrical characterisation of (Ga,Mn,Cr)As thin films grown by molecular beam epitaxy
J Ibanez; KW Edmonds; M Henini; L Eaves; D Pastor; R Cusco; L Artus; H Akinaga
JOURNAL OF CRYSTAL GROWTH, 278, 1-4, 695, 698, May 2005, [Peer-reviewed]
English, Scientific journal - Enhanced coercive field of cobalt film deposited on noodle-like porous silicon substrates
ZG Sun; H Akinaga
APPLIED PHYSICS LETTERS, 86, 18, May 2005, [Peer-reviewed]
English, Scientific journal - Vortex-chirality control in mesoscopic disk magnets observed by photoelectron emission microscopy
T Taniuchi; M Oshima; H Akinaga; K Ono
JOURNAL OF APPLIED PHYSICS, 97, 10, May 2005, [Peer-reviewed]
English, Scientific journal - Spin-polarized surface state of MnSb(0001)
O Rader; M Lezaic; S Blugel; A Fujimori; A Kimura; N Kamakura; A Kakizaki; S Miyanishi; H Akinaga
NEW JOURNAL OF PHYSICS, 7, Apr. 2005, [Peer-reviewed]
English, Scientific journal - Real-time direct observation of asymmetric magnetization reversal in exchange-biased single-layer systems
KS Ryu; DH Kim; SC Shin; H Akinaga
PHYSICAL REVIEW B, 71, 15, Apr. 2005, [Peer-reviewed]
English, Scientific journal - Real-time observation of charged exciton drift in modulation-doped (Cd,Mn)Te quantum well
F Takano; T Tokizaki; H Akinaga; S Kuroda; K Takita
PHYSICAL REVIEW B, 71, 12, Mar. 2005, [Peer-reviewed]
English, Scientific journal - Synthesis and characterization of ferromagnetic MnSiC compound
Fumiyoshi Takano; Hironori Ofuchi; Jeungwoo Lee; Kôki Takita; Hiro Akinaga
INTERMAG ASIA 2005: Digests of the IEEE International Magnetics Conference, 186, 2005
English, International conference proceedings - Real-time direct observation of asymmetric magnetization reversal in exchange-biased single-layer systems
Kwang-Su Ryu; Dong-Hyun Kim; Sung-Chul Shin; H. Akinaga
Physical Review B - Condensed Matter and Materials Physics, 71, 15, 2005, [Peer-reviewed]
English, Scientific journal - Fluorescence EXAFS analysis of nanoscale zinc-blende MnAs dots grown on GaAs(001) by molecular beam epitaxy
H. Ofuchi; J. Okabayashi; M. Mizuguchi; M. Yamada; K. Ono; Y. Takeda; M. Oshima; H. Akinaga
Physica Scripta T, T115, 431, 432, 2005, [Peer-reviewed]
Scientific journal - 2-inch 4H-SIC homoepitaxial layer grown on on-axis C-face substrate by CVD method
K Kojima; H Okumura; S Kuroda; D Arai; A Ohi; H Akinaga
SILICON CARBIDE AND RELATED MATERIALS 2004, 483, 93, 96, 2005, [Peer-reviewed]
English, Scientific journal - A magnetic force microscope using CoFe-coated carbon nanotube probes
H Kuramochi; T Uzumaki; M Yasutake; A Tanaka; H Akinaga; H Yokoyama
NANOTECHNOLOGY, 16, 1, 24, 27, Jan. 2005, [Peer-reviewed]
English, Scientific journal - Perpendicular magnetic properties of CoCr films on GaAs
T Manago; H Kuramochi; H Akinaga
JOURNAL OF APPLIED PHYSICS, 97, 2, Jan. 2005, [Peer-reviewed]
English, Scientific journal - Control of excitonic motion in modulation-doped (Cd,Mn)Te QW by magnetic and electric fields
F Takano; T Tokizaki; H Akinaga; S Kuroda; K Takita
Physics of Semiconductors, Pts A and B, 772, 1323, 1324, 2005, [Peer-reviewed]
English, International conference proceedings - Strong electron correlation effects in non-volatile electronic memory devices
IH Inoue; MJ Rozenberg; S Yasuda; MJ Sanchez; M Yamazaki; T Manago; H Akinaga; H Takagi; H Akoh; Y Tokura
2005 Non-Volatile Memory Technology Symposium, Proceedings, 131, 136, 2005, [Peer-reviewed]
English, International conference proceedings - Fluorescence EXAFS analysis of nanoscale zinc-blende MnAs dots grown on GaAs(001) by molecular beam epitaxy
H. Ofuchi; J. Okabayashi; M. Mizuguchi; M. Yamada; K. Ono; Y. Takeda; M. Oshima; H. Akinaga
PHYSICA SCRIPTA, T115, 431, 432, 2005, [Peer-reviewed]
English, Scientific journal - Zinc-blende CrAs/GaAs multilayers grown by molecular-beam epitaxy
H. Akinaga; M. Mizuguchi
Journal of Physics Condensed Matter, 16, 48, S5549, S5553, 08 Dec. 2004, [Peer-reviewed]
English, International conference proceedings - Magnetic-field-controllable avalanche breakdown and giant magnetoresistive effects in Gold/semi-insulating-GaAs Schottky diode
Z. G. Sun; M. Mizuguchi; T. Manago; H. Akinaga
Applied Physics Letters, 85, 23, 5643, 5645, 06 Dec. 2004, [Peer-reviewed]
English, Scientific journal - Density-dependent electronic structure of zinc-blende-type MnAs dots on GaAs(001) studied by in situ photoemission spectroscopy
J. Okabayashi; M. Mizuguchi; K. Ono; M. Oshima; A. Fujimori; H. Kuramochi; H. Akinaga
Physical Review B - Condensed Matter and Materials Physics, 70, 23, 1, 4, Dec. 2004, [Peer-reviewed]
English, Scientific journal - Nano-oxide fabrication on thin-films of 3d-metal compounds and alloys
H. Kuramochi; T. Tokizaki; T. Onuki; J. Okabayashi; M. Mizuguchi; F. Takano; H. Oshima; T. Manago; H. Akinaga; H. Yokoyama
Surface Science, 566-568, 1-3, 349, 355, 20 Sep. 2004, [Peer-reviewed]
English, International conference proceedings - Dynamic magnetic properties of epitaxial MnAs thin films studied by spin-wave Brillouin scattering
A. Murayama; K. Hyomi; M. Sakuma; Y. Oka; J. Okabayashi; M. Mizuguchi; H. Kuramochi; H. Akinaga
Journal of Applied Physics, 95, 11, 6619, 6621, 01 Jun. 2004, [Peer-reviewed]
English, International conference proceedings - Room temperature magnetoresistance effect observed in Au/GaAs films processed by focused ion beam
Masaki Mizuguchi; Takashi Manage; Hiro Akinaga
Journal of Magnetism and Magnetic Materials, 272-276, 1, e1385, e1386, May 2004, [Peer-reviewed]
English, International conference proceedings - Magnetic properties and domain structures of FeSiB thin films
Z. G. Sun; H. Kuramochi; M. Mizuguchi; F. Takano; Y. Semba; H. Akinaga
Surface Science, 556, 1, 33, 38, 01 May 2004, [Peer-reviewed]
English, Scientific journal - Density dependence of zinc-blende MnAs dots studied by X-ray absorption spectroscopy and X-ray magnetic circular dichroism
J. Okabayashi; M. Mizuguchi; K. Ono; M. Oshima; A. Fujimori; M. Yuri; C. T. Chen; H. Akinaga
Journal of Magnetism and Magnetic Materials, 272-276, SUPPL. 1, e1553, e1355, May 2004, [Peer-reviewed]
English, International conference proceedings - Magnetic properties and domain structures of FeSiB thin films prepared by RF-sputtering method
Z. G. Sun; H. Kuramochi; M. Mizuguchi; F. Takano; Y. Semba; H. Akinaga
Journal of Magnetism and Magnetic Materials, 272-276, 1160, 1161, May 2004, [Peer-reviewed]
English, Scientific journal - Magnetic pole pinning at rectangular defects on MnAs/GaAs(0 0 1)
H. Kuramochi; J. Okabayashi; F. Takano; M. Mizuguchi; T. Manago; H. Akinaga
Surface Science, 550, 1-3, 192, 198, 10 Feb. 2004, [Peer-reviewed]
English, Scientific journal - High-resolution MFM observation of magnetic recording media using carbon nanotube probes
Kuramochi Hiromi; Uzumaki Takuya; Yasutake Masatoshi; Tanaka Atsushi; Akinaga Hiroyuki; Yokoyama Hiroshi
Abstract of annual meeting of the Surface Science of Japan, 24, 0, 78, 78, The Surface Science Society of Japan, 2004
均一に強磁性体薄膜をコーティングされたＣＮＴ探針を用いてＭＦＭの高分解能観察に成功した。記録密度１１００ｋＦＣＩの次世代垂直磁気記録媒体のドメイン構造（幅２４ｎｍ）がはっきりと観察され、断面プロファイルから、分解能は約１０ｎｍと求められた。より高密度の磁気記録媒体も観察可能であると予測される為、この方法は、磁気記録・スピンエレクトロニクス分野における強力な研究ツールとなると期待される。 - Au/GaAs magnetoresistive-switch-effect devices fabricated by wet etching
Zhi-Gang Sun; Masaki Mizuguchi; Hiroyuki Akinaga
Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, 43, 4 B, 2101, 2103, Japan Society of Applied Physics, 2004, [Peer-reviewed]
English, International conference proceedings - Spatial diffusion of excitons in n-type modulation-doped (Cd,Mn)Te/(Cd,Mg)Te single quantum wells under magnetic fields
Fumiyoshi Takano; Hiro Akinaga; Takashi Tokizaki; Shinji Kuroda; Kôki Takita
Applied Physics Letters, 83, 14, 2853, 2855, American Institute of Physics, 06 Oct. 2003, [Peer-reviewed]
English, Scientific journal - Materials design of Cr-based half-metallic ferromagnets
M Shirai; K Ikeuchi; H Taguchi; H Akinaga
JOURNAL OF SUPERCONDUCTIVITY, 16, 1, 27, 29, Feb. 2003, [Peer-reviewed]
English, Scientific journal - Materials design of Cr-based half-metallic ferromagnets
M. Shirai; K. Ikeuchi; H. Taguchi; H. Akinaga
Journal of Superconductivity and Novel Magnetism, 16, 1, 27, 30, 2003
English, Scientific journal - High-sensitive magnetic-field-sensing materials composed of metal/semiconductor hybrid nanostructures
H Akinaga
INTERNATIONAL CONFERENCE ON MEMS, NANO AND SMART SYSTEMS, PROCEEDINGS, 134, 139, 2003, [Peer-reviewed]
English, International conference proceedings - Enhanced TMR signal in a spin-valve transistor
M Honda; K Ono; S Tarucha; T Sato; T Manago; H Akinaga
TOWARDS THE CONTROLLABLE QUANTUM STATES: MESOSCOPIC SUPERCONDUCTIVITY AND SPINTRONICS, 44, 47, 2003, [Peer-reviewed]
English, International conference proceedings - Magnetic domain structure of MnAs thin films as a function of temperature
Masaki Mizuguchi; Hiromi Kuramochi; Jun Okabayashi; Takashi Manago; Hiroyuki Akinaga
Materials Transactions, 44, 12, 2578, 2581, Japan Institute of Metals (JIM), 2003, [Peer-reviewed]
English, Scientific journal - Fluorescence extended X-ray absorption fine structure analysis of half-metallic ferromagnet "zinc-blende CrAs" grown on GaAs by molecular beam epitaxy
H. Ofuchi; M. Mizuguchi; K. Ono; M. Oshima; H. Akinaga; T. Manago
Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, 199, 227, 230, Jan. 2003, [Peer-reviewed]
English, International conference proceedings - Indium supply from triisopropylindium onto a GaAs(001) surface at room temperature
H Kuramochi; J Cui; A Ohtake; M Ozeki; M Kishida; H Uchida; H Akinaga
APPLIED PHYSICS LETTERS, 81, 21, 4058, 4060, Nov. 2002, [Peer-reviewed]
English, Scientific journal - Metal-nanocluster equipped GaAs surfaces designed for high-sensitive magnetic field sensors
H Akinaga
SURFACE SCIENCE, 514, 1-3, 145, 150, Aug. 2002, [Peer-reviewed]
English, Scientific journal - Spin-polarized light-emitting diode using metal/insulator/semiconductor structures
T Manago; H Akinaga
APPLIED PHYSICS LETTERS, 81, 4, 694, 696, Jul. 2002, [Peer-reviewed]
English, Scientific journal - Decomposition of trisdimethylaminoarsenic and As nucleation on GaAs(001)-2x4 at low temperature
H Kuramochi; J Cui; M Ozeki; H Uchida; H Akinaga; H Yoshida; N Sanada; Y Fukuda
APPLIED PHYSICS LETTERS, 81, 1, 132, 134, Jul. 2002, [Peer-reviewed]
English, Scientific journal - Formation, properties and photoelectron spectroscopy of magnetic nanostructures
M Oshima; M Mizuguchi; K Ono; H Akinaga; M Sugiyama
JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA, 124, 2-3, 165, 174, Jul. 2002, [Peer-reviewed]
English, Scientific journal - In-situ photoelectron spectroscopy of magnetic dots and magnetic semiconductor nanostructures
M Oshima; K Ono; M Mizuguchi; M Yamada; J Okabayashi; A Fujimori; H Akinaga; M Shirai
INTERNATIONAL JOURNAL OF MODERN PHYSICS B, 16, 11-12, 1681, 1690, May 2002, [Peer-reviewed]
English, Scientific journal - Epitaxial growth of zinc-blende CrAs/GaAs multilayer
M Mizuguchi; H Akinaga; T Manago; K Ono; M Oshima; M Shirai; M Yuri; HJ Lin; HH Hsieh; CT Chen
JOURNAL OF APPLIED PHYSICS, 91, 10, 7917, 7919, May 2002, [Peer-reviewed]
English, Scientific journal - Fabrication, magnetic properties, and electronic structures of nanoscale zinc-blende MnAs dots (invited)
K Ono; J Okabayashi; M Mizuguchi; M Oshima; A Fujimori; H Akinaga
JOURNAL OF APPLIED PHYSICS, 91, 10, 8088, 8092, May 2002, [Peer-reviewed]
English, Scientific journal - Growth of ferromagnetic semiconductor: (Ga,Cr)As
M Yamada; K Ono; M Mizuguchi; J Okabayashi; M Oshima; M Yuri; HJ Lin; HH Hsieh; CT Chen; H Akinaga
JOURNAL OF APPLIED PHYSICS, 91, 10, 7908, 7910, May 2002, [Peer-reviewed]
English, Scientific journal - Magnetoresistive switch effect in metal/semiconductor hybrid granular films: extremely huge magnetoresistance effect at room temperature
H Akinaga
SEMICONDUCTOR SCIENCE AND TECHNOLOGY, 17, 4, 322, 326, Apr. 2002, [Peer-reviewed]
English, Scientific journal - Enchanced magnetooptical response of magnetic nanoclusters embedded in semiconductor
H Akinaga; M Mizuguchi; T Manago; E Gan'shina; A Granovsky; Rodin, I; A Vinogradov; A Yurasov
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 242, 470, 472, Apr. 2002, [Peer-reviewed]
English, Scientific journal - Growth of Fe(100) on GaAs(100) for tunnel magneto-resistance junctions
T Manago; M Mizuguchi; F Akinaga
JOURNAL OF CRYSTAL GROWTH, 237, 1378, 1382, Apr. 2002, [Peer-reviewed]
English, Scientific journal - Magnetoresistive switch effect in metal/semiconductor hybrid granular films - extra huge magnetoresistance effect at room temperature
H Akinaga
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 239, 1-3, 145, 148, Feb. 2002, [Peer-reviewed]
English, Scientific journal - Epitaxial growth of new half-metallic ferromagnet "zinc-blende CrAs" and the substrate temperature dependence
M Mizuguchi; H Akinaga; T Manago; K Ono; M Oshima; M Shirai
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 239, 1-3, 269, 271, Feb. 2002, [Peer-reviewed]
English, Scientific journal - Thickness dependence of photoemission spectra in zinc-blende CrAs
M Mizuguchi; K Ono; M Oshima; J Okabayashi; H Akinaga; T Manago; M Shirai
SURFACE REVIEW AND LETTERS, 9, 1, 331, 334, Feb. 2002, [Peer-reviewed]
English, Scientific journal - 完全スピン偏極強磁性体CrAsの物質設計および合成
眞砂卓史; 水口将輝; 秋永広幸; 白井正文; 小野寛太; 尾嶋正治
日本応用磁気学会誌, 26, 4, 441, 444, The Magnetics Society of Japan, 2002, [Peer-reviewed]
Japanese, Scientific journal, New half-metallic ferromagnets have been found in a zinc-blende crystal structure. The zinc-blende CrAs has been designed by ab initio calculations and the calculation predicts the highly spin-polarized electronic band structure. The zinc-blende CrAs thin film has been synthesized on GaAs (001) substrates by molecular-beam epitaxy. The film shows ferromagnetic behavior at room temperature and the magnetic moment per formula unit of CrAs is estimated to be about 3 μB, which agrees well with the theoretical prediction. The photoemission spectra of the CrAs film showed the Fermi edges indicating the metallic characteristics and the small band dispersion derived from Cr-3d bands. - スピンを使うースピントロニクスの進展
鈴木義茂; 秋永広幸
アトムテクノロジーへの挑戦〈2〉-電子スピンを見る操る-, 第Ⅱ分冊, 2, 15, 31, Nov. 2001, [Peer-reviewed]
Japanese - Ga segregation in MnSb epitaxial growth on GaAs (100) and (111) B substrates
Kanta Ono; Masaki Shuzo; Masaharu Oshima; Hiro Akinaga
Physical Review B - Condensed Matter and Materials Physics, 64, 8, 853281, 853288, 15 Aug. 2001, [Peer-reviewed]
Scientific journal - Ga segregation in MnSb epitaxial growth on GaAs (100) and (111) B substrates
K Ono; M Shuzo; M Oshima; H Akinaga
PHYSICAL REVIEW B, 64, 8, Aug. 2001, [Peer-reviewed]
English, Scientific journal - Control of the Schottky barrier height in epitaxial magnetic MnAs/n-GaAs and MnSb/n-GaAs contacts
W Van Roy; RFB Roelfsema; ZY Liu; H Akinaga; S Miyanishi; T Manago; G Borghs; J De Boeck
JOURNAL OF CRYSTAL GROWTH, 227, 852, 856, Jul. 2001, [Peer-reviewed]
English, Scientific journal - Interlayer coupling and magnetoresistance of MnGa-based trilayers with semiconducting, antiferromagnetic, and ferrimagnetic spacer layers
W Van Roy; H Akinaga; S Miyanishi
PHYSICAL REVIEW B, 63, 18, May 2001, [Peer-reviewed]
English, Scientific journal - Magnetic properties of MnSb granular films
M Mizuguchi; H Akinaga; K Ono; M Oshima
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 226, 1838, 1839, May 2001, [Peer-reviewed]
English, Scientific journal - Magnetoresistive switch effect in MnSb granular films grown on sulfur-passivated GaAs: more-than 10 000% magnetoresistance effect at room-temperature
H Akinaga; M Mizuguchi; T Manago; T Sato; H Kuramochi; K Ono; H Ofuchi; M Oshima
PHYSICA E, 10, 1-3, 447, 451, May 2001, [Peer-reviewed]
English, Scientific journal - Properties of semiconductor quantum dots and magnetic nanocrystals grown by molecular beam epitaxy
M Oshima; T Mano; M Mizuguchi; K Ono; H Fujioka; H Akinaga; N Koguchi
JOURNAL OF THE KOREAN PHYSICAL SOCIETY, 38, 4, 396, 400, Apr. 2001
English, Scientific journal - MnSb:GaAsグラニュラー薄膜の室温光誘起巨大磁気抵抗効果
水口将輝; 秋永広幸; 小野寛太; 尾嶋正治
日本応用磁気学会誌, 25, 4, 502, 506, The Magnetics Society of Japan, 2001, [Peer-reviewed]
Japanese, Scientific journal, Nano-size MnSb clusters with a nominal thickness of 3 ML were grown on GaAs(111)B substrates by molecular beam epitaxy. The films were capped with GaAs, and the magnetoresistance effect was investigated at room temperature. A large positive magnetoresistance effect of over 50% was observed. The dependency on the sweep rate of magnetic field and an effect of Cr-doping in GaAs capping layers were investigated. The photoinduced MR effect was also observed under laser-irradiation with a photon energy above the band gap of GaAs. It is shown that these phenomena can be attributed to the enhancement of the conductivity by photogenerated carriers. - Growth and characterization of low-temperature grown GaN with high Fe doping
H Akinaga; S Nemeth; J De Boeck; L Nistor; H Bender; G Borghs; H Ofuchi; M Oshima
APPLIED PHYSICS LETTERS, 77, 26, 4377, 4379, Dec. 2000, [Peer-reviewed]
English, Scientific journal - Material design of half-metallic zinc-blende CrAs and the synthesis by molecular-beam epitaxy
H Akinaga; T Manago; M Shirai
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 39, 11B, L1118, L1120, Nov. 2000, [Peer-reviewed]
English, Scientific journal - Schottky barrier height of MnSb(0001)/GaAs(111)B contacts: Influence of interface structure
T Manago; S Miyanishi; H Akinaga; W Van Roy; RFB Roelfsema; T Sato; E Tamura; S Yuasa
JOURNAL OF APPLIED PHYSICS, 88, 4, 2043, 2047, Aug. 2000, [Peer-reviewed]
English, Scientific journal - Fabrication and magnetotransport properties of nanoscaled MnSb dots
M. Mizuguchi; H. Akinaga; K. Ono; M. Oshima
Journal of Applied Physics, 87, 9 II, 5639, 5641, May 2000, [Peer-reviewed]
English, Scientific journal - Room-temperature photoinduced magnetoresistance effect in GaAs including MnSb nanomagnets
H. Akinaga; M. Mizuguchi; K. Ono; M. Oshima
Applied Physics Letters, 76, 18, 2600, 2602, 01 May 2000, [Peer-reviewed]
English, Scientific journal - Crystallographic and magneto-optical studies of nanoscaled MnSb dots grown on GaAs
M. Mizuguchi; H. Akinaga; K. Ono; M. Oshima
Applied Physics Letters, 76, 13, 1743, 1745, 27 Mar. 2000, [Peer-reviewed]
English, Scientific journal - Formation and structural investigation of MnSb dots on S-passivated GaAs(0 0 1) substrates
M. Mizuguchi; H. Akinaga; K. Ono; M. Oshima
Journal of Crystal Growth, 209, 2-3, 552, 555, Feb. 2000, [Peer-reviewed]
English, Scientific journal - Molecular beam epitaxy of MnSb/MnAs multilayers on GaAs
K. Ono; T. Uragami; M. Mizuguchi; H. Fujioka; M. Oshima; M. Tanaka; H. Akinaga
Journal of Crystal Growth, 209, 2-3, 556, 560, Feb. 2000, [Peer-reviewed]
English, Scientific journal - Room-temperature thousandfold magnetoresistance change in MnSb granular films: Magnetoresistive switch effect
H. Akinaga; M. Mizuguchi; K. Ono; M. Oshima
Applied Physics Letters, 76, 3, 357, 359, 17 Jan. 2000, [Peer-reviewed]
English, Scientific journal - Magneto-optical properties and the potential application of GaAs with magnetic MnAs nanoclusters
H Akinaga; S Miyanishi; K Tanaka; W Van Roy; K Onodera
APPLIED PHYSICS LETTERS, 76, 1, 97, 99, Jan. 2000, [Peer-reviewed]
English, Scientific journal - Lifetime and spin relaxation time measurements of micro-fabricated GaAs tips
R Shinohara; K Yamaguchi; H Hirota; Y Suzuki; T Manago; H Akinaga; T Kuroda; F Minami
MICROPROCESSES AND NANOTECHNOLOGY 2000, DIGEST OF PAPERS, 170, 171, 2000, [Peer-reviewed]
English, International conference proceedings - Lifetime and spin relaxation time measurements of micro-fabricated GaAs tips
R. Shinohara; K. Yamaguchi; H. Hirota; Y. Suzuki; T. Manago; H. Akinaga; T. Kuroda; F. Minami
Digest of Papers - 2000 International Microprocesses and Nanotechnology Conference, MNC 2000, Vol.39, No.12B, 170, 171, Institute of Electrical and Electronics Engineers Inc., 2000, [Peer-reviewed]
English, International conference proceedings - Electron localization in nanoscale MnAs dots on GaAs: A photoemission study
Kanta Ono; Masaki Mizuguchi; Takeshi Uragami; Hiroyuki Akinaga; Hiroshi Fujioka; Masaharu Oshima
Physica B: Condensed Matter, 284-288, PART II, 1778, 1779, 2000, [Peer-reviewed]
English, Scientific journal - MnSbグラニュラー薄膜の作製と磁気光学特性
水口将輝; 秋永広幸; 小野寛太; 尾嶋正治
日本応用磁気学会誌, 24, 4, 499, 502, The Magnetics Society of Japan, 2000, [Peer-reviewed]
Japanese, Scientific journal, MnSb ultra-thin films with nominal thicknesses of 0.35, 0.70, 1.05, and 1.40 nm were grown on sulfur-passivated GaAs (001) substrates by molecular beam epitaxy. Atomic force microscopy analyses showed that MnSb formed nanosized dots on the substrate, and that coalescence of the clusters occurred at nominal thicknesses between 0.70 and 1.05 nm. The intensity of the polar magnetic circular dichroism of MnSb clusters and the saturation magnetization suddenly increased when the nominal thickness reached the critical value of 1.05 nm. The coalescence of the dots can be correlated with the sharp increase in the MCD intensity. - Enormous magnetoresistance effect in hybrid ferromagnetic-nanocluster/semiconductor films
H. Akinaga; M. Mizuguchi; K. Ono; M. Oshima
Transactions of Materials Research Society of Japan, 25, 1119, 1122, 2000, [Peer-reviewed]
English, Scientific journal - MnSbグラニュラー構造における室温超巨大磁気抵抗効果
秋永広幸; 水口将輝; 小野寛太; 尾嶋正治
日本応用磁気学会誌, 24, 4, 451, 454, The Magnetics Society of Japan, 2000, [Peer-reviewed]
Japanese, Scientific journal, A huge positive magnetoresistance effect in a relatively low magnetic field (less than 0.5 T) at room temperature was discovered in MnSb granular films. A granular film consisting of nano-scale MnSb clusters was grown on a sulfur-passivated GaAs(001) substrate by molecular beam epitaxy, then covered with an Sb thin layer. The granular film shows magnetic-field-sensitive current-voltage characteristics. When a constant voltage, above the threshold value, is applied to the film, a more than 1000 percent change in the current, which we term a magnetoresistive switch, is driven by the magnetoresistance effect. A possible mechanism for the magnetoresistive switch effect is discussed. - Enhanced Kerr rotation in electrodeposited nickel films
K Attenborough; J De Boeck; JP Celis; M Mizuguchi; H Akinaga
IEEE TRANSACTIONS ON MAGNETICS, 35, 5, 2985, 2987, Sep. 1999, [Peer-reviewed]
English, Scientific journal - Epitaxial growth of magnetic Mn2Sb1-xAsx thin films on (001)GaAs
S Miyanishi; H Akinaga; W Van Roy; K Tanaka
JOURNAL OF CRYSTAL GROWTH, 201, 693, 697, May 1999, [Peer-reviewed]
English, Scientific journal - Low-temperature MBE growth of GaAs on magnetic metal substrates
W Van Roy; H Akinaga; S Miyanishi
JOURNAL OF CRYSTAL GROWTH, 201, 698, 701, May 1999, [Peer-reviewed]
English, Scientific journal - Epitaxial growth of MnSb on single crystalline ferrite substrates
Ikeda T.; Fujioka H.; Ono K.; Oshima M.; Akinaga H.; Yoshimoto M.; Maruta H.; Koinuma H.; Watanabe Y.
Journal of the Magnetics Society of Japan, 23, 1, 685, 687, The Magnetics Society of Japan, 1999
English, We have grown ferromagnetic MnSb thin films on (111), (110), and (100) Mn-Zn ferrite substrates by molecular beam epitaxy (MBE). Epitaxial monocrystalline MnSb films with the growth plane of (0001) have been obtained on the (111) Mn-Zn ferrite substrates. The MnSb epitaxial films have shown in-plane alignment of [11-20] MnSb // [1-10] Mn-Zn ferrite. On the other hand, polycrystalline MnSb growth has been observed on (110) and (100) Mn-Zn ferrite substrates even under the same growth conditions. - Structure and magnetic properties of Fe-N thin films grown by ECR deposition
S Nemeth; H Akinaga; H Boeve; H Bender; J De Boeck; G Borghs
ADVANCED HARD AND SOFT MAGNETIC MATERIALS, 577, 611, 615, 1999, [Peer-reviewed]
English, International conference proceedings - Structure and magnetic properties of Fe-N thin films grown by ECR deposition
S Nemeth; H Akinaga; H Boeve; H Bender; J De Boeck; G Borghs
POLYCRYSTALLINE METAL AND MAGNETIC THIN FILMS, 562, 295, 299, 1999, [Peer-reviewed]
English, International conference proceedings - Formation of low-dimensional structures of manganese pnictides
K. Ono; T. Uragami; M. Mizuguchi; H. Fujioka; M. Oshima; M. Tanaka; H. Akinaga; Y. Watanabe
Journal of the Magnetics Society of Japan, 23, 1, 688, 690, The Magnetics Society of Japan, 1999, [Peer-reviewed]
English, Scientific journal, We have successfully grown manganese pnictides epitaxial multilayers [MnSb/MnAs]5 on GaAs by molecular beam epitaxy. The structural and magnetic properties of the multilayers have been investigated by reflection high energy electron diffraction, X-ray diffraction, and superconducting quantum interference device. - Influence of GaAs (001) surface termination on the in-plane magnetic anisotropies of MnSb epitaxial films
H Akinaga; S Miyanishi; W Van Roy; J De Boeck; G Borghs
APPLIED PHYSICS LETTERS, 73, 22, 3285, 3287, Nov. 1998, [Peer-reviewed]
English, Scientific journal - Superlattices of III-V semiconductor and heterogeneous magnetic layers for CPP magnetotransport
J De Boeck; H Akinaga; C Bruynseraede; H Bender; G Borghs
IEEE TRANSACTIONS ON MAGNETICS, 34, 4, 891, 893, Jul. 1998, [Peer-reviewed]
English, Scientific journal - Initial stage of Schottky barrier formation of ferromagnetic MnSb(0001) films on GaAs(111)B
M Oshima; M Shuzo; K Ono; H Fujioka; Y Watanabe; S Miyanishi; H Akinaga
APPLIED SURFACE SCIENCE, 130, 892, 898, Jun. 1998, [Peer-reviewed]
English, Scientific journal - Negative magnetoresistance in GaAs with magnetic MnAs nanoclusters
H Akinaga; J De Boeck; G Borghs; S Miyanishi; A Asamitsu; W Van Roy; Y Tomioka; LH Kuo
APPLIED PHYSICS LETTERS, 72, 25, 3368, 3370, Jun. 1998, [Peer-reviewed]
English, Scientific journal - Mn_2As Films and MnGa/Mn_2As/MnGa Trilayers on GaAs(001)
ROY W.Van; AKINAGA H.; MIYANISHI S.
Journal of the Magnetics Society of Japan, 22, 4, 605, 608, The Magnetics Society of Japan, 15 Apr. 1998
English, We have succeeded in growing for the first time Mn2As thin films on GaAs (001) using molecular beam epitaxy. Bulk Mn2As is a layered antiferromagnetic material. Single-crystalline films with the c axis perpendicular to the substrate were grown directly on the GaAs substrates, as well as on MnGa seed layers, where MnGa is a ferromagnet. We also grew MnGa/Mn2As/MnGa trilayers, and we found interlayer coupling with oscillatory spacer layer thickness dependence. The coupling strengths at room temperature were up to -0.63 mJ/m2 (antiferromagnetic) and +0.53 mJ/m2 (ferromagnetic). The oscillation period was between 0.95 and 1.55 nm, which is close to the period of the antiferromagnetic order in Mn2As (1.25 nm). The sign of the magnetoresistance was correlated with the sign of the interlayer coupling in the same way as was found earlier for MnGa/ (Mn, Ga, As)/MnGa trilayers. - Surface preparation and spin-resolved photoemission of epitaxial MnSb(0001) films on GaAs(111)
O Rader; A Kimura; N Kamakura; KS An; A Kakizaki; S Miyanishi; H Akinaga; M Shirai; K Shimada; A Fujimori
JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA, 88, 225, 228, Mar. 1998, [Peer-reviewed]
English, Scientific journal - Optical properties in zincblende MnTeSb films
K Takamura; S Miyanishi; S Yamamoto; H Akinaga; J Nakahara
TERNARY AND MULTINARY COMPOUNDS, 152, 613, 616, 1998, [Peer-reviewed]
English, Scientific journal - Exchange splittings of Mn- and Sb-derived states by spin-resolved valence-band photoemission of MnSb
O Rader; A Kimura; N Kamakura; KS An; A Kakizaki; S Miyanishi; H Akinaga; M Shirai; K Shimada; A Fujimori
PHYSICAL REVIEW B, 57, 2, R689, R692, Jan. 1998, [Peer-reviewed]
English, Scientific journal - Manganese-based magnetic compounds grown on III-V semiconductors: Growth technique, magnetic properties, and applications
H Akinaga; S Miyanishi; A Asamitsu; W Van Roy; LH Kuo; Y Tomioka; J De Boeck; G Borghs
ASDAM'98, SECOND INTERNATIONAL CONFERENCE ON ADVANCED SEMICONDUCTOR DEVICES AND MICROSYSTEMS, CONFERENCE PROCEEDINGS, 145, 154, 1998, [Peer-reviewed]
English, International conference proceedings - Correlation between the signs of the magnetoresistance and of the interlayer coupling in MnGa/(Mn,Ga,As)/MnGa trilayers
W VanRoy; H Akinaga; S Miyanishi; A Asamitsu
APPLIED PHYSICS LETTERS, 71, 7, 971, 973, Aug. 1997, [Peer-reviewed]
English, Scientific journal - Magnetoresistance in epitaxial MnGa/(Ga,As,Mn)/MnGa trilayers
H Akinaga; W VanRoy; S Miyanishi; A Asamitsu
PHYSICA B, 237, 269, 270, Jul. 1997, [Peer-reviewed]
English, Scientific journal - Anisotropic epitaxial growth of Mn1+xSb thin films on reconstructed (001)GaAs surface
S Miyanishi; H Akinaga; K Tanaka
PHYSICA B, 237, 281, 282, Jul. 1997, [Peer-reviewed]
English, Scientific journal - Ultrafast energy transfer in manganese-doped ZnSe
T Kuroda; H Ito; F Minami; H Akinaga
JOURNAL OF LUMINESCENCE, 72-4, 106, 107, Jun. 1997, [Peer-reviewed]
English, Scientific journal - Two-dimensional confinement effect on Mn2+ intraionic transition
H Ito; T Takano; T Kuroda; F Minami; H Akinaga
JOURNAL OF LUMINESCENCE, 72-4, 342, 343, Jun. 1997, [Peer-reviewed]
English, Scientific journal - Magnetization process of a nanometer-scale cobalt dots array formed on a reconstructed Au(111) surface
Takeshita, H.; Suzuki, Y.; Akinaga, H.; Mizutani, W.; Ando, K.; Katayama, T.; Itoh, A.; Tanaka, K.
Journal of Magnetism and Magnetic Materials, 165, 1-3, 38, 41, Jun. 1997, [Peer-reviewed]
English, Scientific journal - Structural and magnetic properties of epitaxial (0001) MnSb thin films grown on (111) B GaAs: Influence of interface quality
H Akinaga; S Miyanishi; W VanRoy; LH Kuo
APPLIED PHYSICS LETTERS, 70, 18, 2472, 2474, May 1997, [Peer-reviewed]
English, Scientific journal - Magnetic Coupling in Epitaxial MnGa/(Mn, Ga, As)/MnGa Trilayers
VAN Roy W.; AKINAGA H.; MIYANISHI S.
Journal of the Magnetics Society of Japan, 21, 4, 545, 548, The Magnetics Society of Japan, 15 Apr. 1997
Japanese, We have grown epitaxial ferromagnet / semiconductor / ferromagnet trilayers using the compound magnetic metal δMnGa, and for the first time also a compound semiconductor, GaAs, as spacer layer. At a substrate temperature of 300°C for the spacer layer growth, we obtained single crystalline films with flat interfaces, but we observed a strong Mn diffusion into the spacer. The magnetic layers are strongly coupled, with a coupling energy comparable to that of metallic spacers. This may be caused by the formation of the diluted magnetic semiconductor Ga1-xMnxAs or the antiferromagnetic metal Mn2As in the spacer layer (either as a mixture or an intermediate phase). At a spacer layer growth temperature of 250°C the Mn incorporation is strongly suppressed, but the growth becomes three-dimensional and we have not yet observed interlayer coupling. - Temperature dependence of interlayer coupling in delta MnGa/(Ga,As,Mn)/delta MnGa trilayers
H Akinaga; W VanRoy; S Miyanishi; K Tanaka
JOURNAL OF APPLIED PHYSICS, 81, 8, 5345, 5347, Apr. 1997, [Peer-reviewed]
English, Scientific journal - Epitaxial Mn2Sb thin films grown by molecular-beam epitaxy on (001) GaAs and their magnetic and magneto-optical properties
S Miyanishi; H Akinaga; W VanRoy; K Tanaka
APPLIED PHYSICS LETTERS, 70, 15, 2046, 2048, Apr. 1997, [Peer-reviewed]
English, Scientific journal - 8a-E-6 Observation of Faraday-Rotation in CdMnTe.
Mizuno M.; Kuroda T.; Ito H.; Koshihara S.; Minami F.; Akinaga H.
Meeting Abstracts of the Physical Society of Japan, 52.2.2, 184, The Physical Society of Japan, 1997
Japanese - Observation of antiferromagnetic coupling in delta-MnGa/(Mn,Ga,As)/delta-MnGa trilayers
W VanRoy; H Akinaga; S Miyanishi; K Tanaka; LH Kuo
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 165, 1-3, 149, 152, Jan. 1997, [Peer-reviewed]
English, Scientific journal - Epitaxial MnGa/(Mn,Ga,As)/MnGa trilayers: Growth and magnetic properties
W VanRoy; H Akinaga; S Miyanishi; K Tanaka; LH Kuo
APPLIED PHYSICS LETTERS, 69, 5, 711, 713, Jul. 1996, [Peer-reviewed]
English, Scientific journal - Magnetooptical overcoating of MnSb films by surface oxidation
H Akinaga; S Miyanishi; Y Suzuki
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 35, 7B, L897, L899, Jul. 1996, [Peer-reviewed]
English, Scientific journal - Molecular-beam epitaxy of Mn1+xSb thin films and substrate temperature dependence of their magneto-optical properties
S Miyanishi; H Akinaga; K Tanaka
APPLIED PHYSICS LETTERS, 68, 20, 2890, 2892, May 1996, [Peer-reviewed]
English, Scientific journal - Magneto-optical response of nanoscaled cobalt dots array
H Takeshita; Y Suzuki; H Akinaga; W Mizutani; K Tanaka; T Katayama; A Itoh
APPLIED PHYSICS LETTERS, 68, 21, 3040, 3042, May 1996, [Peer-reviewed]
English, Scientific journal - Two-dimensional confinement effect on Mn^<2+> intraionic transition
Ito Hiroyuki; Takano TAmae; Kuroda Takasi; Minami Fujio; Akinaga Hiroyuki
Meeting Abstracts of the Physical Society of Japan, 1996.2, 116, The Physical Society of Japan, 1996
Japanese - Epitaxial growth and magneto-optical study of ferromagnetic-MnSb/antiferromagnetic-MnTe heterostructures
H. Akinaga; S. Miyanishi; Y. Suzuki; K. Tanaka; T. Katayama; K. Ando
Journal of Crystal Growth, 159, 1-4, 1022, 1026, Elsevier, 1996, [Peer-reviewed]
English, Scientific journal - Fine structure of the 2P exciton in ZnSe/GaAs films studied by resonant hyper-Rayleigh and hyper-Raman scatterings
S Matsushita; F Minami; K Yoshida; K Inoue; H Akinaga
JOURNAL OF LUMINESCENCE, 66-7, 1-6, 414, 417, Dec. 1995, [Peer-reviewed]
English, Scientific journal - CRYSTAL-ORIENTATION DEPENDENCE ON MAGNETIC CIRCULAR-DICHROISM SPECTRA OF MNSB EPITAXIAL FILM
H AKINAGA; Y SUZUKI; K TANAKA; K ANDO; T KATAYAMA
APPLIED PHYSICS LETTERS, 67, 1, 141, 143, Jul. 1995, [Peer-reviewed]
English, Scientific journal - FABRICATION AND MAGNETOOPTICAL PROPERTIES OF EPITAXIAL FERROMAGNETIC MN1-XSB THIN-FILMS GROWN ON GAAS AND SAPPHIRE
H AKINAGA; K TANAKA; K ANDO; T KATAYAMA
JOURNAL OF CRYSTAL GROWTH, 150, 1-4, 1144, 1149, May 1995, [Peer-reviewed]
English, Scientific journal - PHOTOLUMINESCENCE IN CDMNTE STRAINED THIN-FILMS
J GREGUS; J NAKAHARA; K TAKAMURA; J WATANABE; K ANDO; H AKINAGA
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 56, 3-4, 407, 410, Mar. 1995, [Peer-reviewed]
English, Scientific journal - Surface Structure of Fe on GaAs.
Takeshita H.; Akinaga H.; Suzuki Y.; Ehinger M.K.; Ando K.; Tanaka K.
Journal of the Magnetics Society of Japan, 19, 3, 730, 733, The Magnetics Society of Japan, Mar. 1995, [Peer-reviewed]
Japanese, Scanning tunneling microscopy (STM) studies were carried out to clarify the initial growth mechanisms of ultrathin Fe films on GaAs(001) substrates. Observation revealed that Fe atoms initially form many small clusters on the flat terraces of the c(4 × 4) reconstructed GaAs(001) surface at room temperature. The typical size of the Fe clusters is about 1.5 nrn, which is nearly equal to the size of the basis structure of the c(4 × 4) reconstruction. It is also shown that the formation of the Fe clusters depends on the reconstruction of the GaAs(001) surface and the temperature of thermal treatment. - OPTICAL STUDY OF THE MAGNETIC PHASE-TRANSITION IN CD1-XMNXTE
K ANDO; H AKINAGA
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 140, 2029, 2030, Feb. 1995, [Peer-reviewed]
English, Scientific journal - SCANNING-TUNNELING-MICROSCOPY STUDY OF ULTRATHIN FE FILMS GROWN ON GAAS(001) SURFACE
H TAKESHITA; H AKINAGA; M EHINGER; Y SUZUKI; K ANDO; K TANAKA
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 34, 2B, 1119, 1122, Feb. 1995, [Peer-reviewed]
English, Scientific journal - Fabrication and magneto-optical study of zinc-blende MnTe and MnTe/MnSb/MnTe sandwiched films
H AKINAGA; K ANDO
II-VI COMPOUNDS AND SEMIMAGNETIC SEMICONDUCTORS, 182-, 483, 488, 1995, [Peer-reviewed]
English, International conference proceedings - ATOMIC LAYER EPITAXY OF ZNSE USING REFLECTANCE DIFFERENCE SPECTROSCOPY
H AKINAGA; K TANAKA
APPLIED SURFACE SCIENCE, 82-3, 298, 304, Dec. 1994, [Peer-reviewed]
English, Scientific journal - STM Study of Ultra Thin Fe Films Grown on GaAs(100) Surface
H.Takeshita; H.Akinaga; M.Ehinger; Y.Suzuki; K.Ando; K.Tanaka
the 1994 International Conference on SSDM, 151, 153, Aug. 1994, [Peer-reviewed]
English, International conference proceedings - FABRICATION AND OPTICAL STUDY OF ZINCBLENDE MNTE EPITAXIAL-FILMS GROWN ON SURFACE-CONTROLLED GAAS
H AKINAGA; K ANDO
APPLIED SURFACE SCIENCE, 75, 292, 297, Jan. 1994, [Peer-reviewed]
English, Scientific journal - EFFECTS OF CLUSTER IONIZATION AND ACCELERATION ON PHOTOLUMINESCENCE SPECTRA OF CDTE-FILMS GROWN BY IONIZED CLUSTER BEAM DEPOSITION
H AKINAGA; K ANDO; S YOSHIDA
JOURNAL OF APPLIED PHYSICS, 74, 4, 2806, 2809, Aug. 1993, [Peer-reviewed]
English, Scientific journal - PREPARATION AND TIME-RESOLVED PHOTOLUMINESCENCE STUDY OF CDTE/CD1-XMNXTE SINGLE QUANTUM-WELLS
H AKINAGA; Y SHIRAI; K TAKITA; T NAKAYAMA; F MINAMI; K INOUE
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 32, 2B, L226, L228, Feb. 1993, [Peer-reviewed]
English, Scientific journal - MAGNETOOPTICAL STUDY OF REDUCED DEIMENSIONALITY AND QUANTUM CONFINEMENT IN CDTE MNTE MULTIPLE-QUANTUM WELLS
Y TAKEUCHI; K ANDO; H AKINAGA; T ABE; H YAMAMOTO
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 32, 408, 409, 1993, [Peer-reviewed]
English, Scientific journal - GROWTH AND MAGNETOOPTIC PROPERTIES OF CDTE CD1-XMNXTE MULTIPLE-QUANTUM WELLS
T ABE; K ANDO; H AKINAGA; Y TAKEUCHI; H YAMAMOTO
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 32, 369, 371, 1993, [Peer-reviewed]
English, Scientific journal - FABRICATION AND HIGH-FIELD MAGNETOABSORPTION STUDY OF CDTE CD1-XMNXTE MULTIPLE-QUANTUM WELLS
H AKINAGA; K ANDO; S YOSHIDA; N MIURA
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 32, 406, 407, 1993, [Peer-reviewed]
English, Scientific journal - OPTICAL-PROPERTIES AND DYNAMIC BEHAVIOR OF LOCALIZED AND BOUND EXCITONS IN CD1-XMNXTE(X=4-PERCENT) GROWN BY MOLECULAR-BEAM EPITAXY
H AKINAGA; K TAKITA; S SASAKI; S TAKEYAMA; N MIURA; T NAKAYAMA; F MINAMI; K INOUE
PHYSICAL REVIEW B, 46, 20, 13136, 13141, Nov. 1992, [Peer-reviewed]
English, Scientific journal - EXCITON EMISSION IN CD1-XMNXTE(X-SIMILAR-OR-EQUAL-TO-1-PERCENT) GROWN BY MOLECULAR-BEAM EPITAXY
H AKINAGA; S KURODA; K TAKITA; T NAKAYAMA; F MINAMI; K INOUE
JOURNAL OF LUMINESCENCE, 51, 4, 157, 165, Mar. 1992, [Peer-reviewed]
English, Scientific journal - CHARGE-TRANSFER AND SUPERCONDUCTIVITY IN ND(BA1-XNDX)2CU3O7+X PREPARED IN HIGH-PRESSURE OXYGEN
K TAKITA; H AKINAGA; T OHSHIMA; Y TAKEDA; M TAKANO
PHYSICA C, 191, 3-4, 509, 514, Feb. 1992, [Peer-reviewed]
English, Scientific journal - Optical properties and dynamical behavior of localized and bound excitons in Cd1-xMnxTe (x=4%) grown by molecular-beam epitaxy
H. Akinaga; K. Takita; S. Sasaki; S. Takeyama; N. Miura; T. Nakayama; F. Minami; K. Inoue
Physical Review B, 46, 20, 13136, 13141, 1992, [Peer-reviewed]
English, Scientific journal - MN2+ INTERNAL EMISSION AND EXCITONIC EMISSION OF MBE-GROWN CD1-XMNXTE - DEPENDENCE ON SUBSTRATE-TEMPERATURE AND MAGNETIC-FIELD
H AKINAGA; K TAKITA; S TAKEYAMA; N MIURA
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 61, 1, 363, 370, Jan. 1992, [Peer-reviewed]
English, Scientific journal - Effect of annealing under high oxygen pressure on the structure and superconductivity of (Ba0.85Nd0.15)2NdCu3O6+z
T. Mochiku; H. Asano; H. Akinaga; T. Ohshima; K. Takita; F. Izumi; Y. Takeda; M. Takano; K. Mizoguchi
Physica C: Superconductivity and its applications, 167, 5-6, 560, 566, 15 May 1990, [Peer-reviewed]
English, Scientific journal - Crystal chemistry and physical properties of La2-xSrxNiO4 (0 ≤ x ≤ 1.6)
Y. Takeda; R. Kanno; M. Sakano; O. Yamamoto; M. Takano; Y. Bando; H. Akinaga; K. Takita; J. B. Goodenough
Materials Research Bulletin, 25, 3, 293, 306, 1990, [Peer-reviewed]
English, Scientific journal - SUPERCONDUCTING PROPERTIES AND THEIR RELATION WITH THE HOLE CONCENTRATION OF LA1+XBA2-XCU3O7-SIGMA SYSTEM
H AKINAGA; K TAKITA; H ASANO; K MASUDA
PHYSICA C, 161, 5-6, 581, 588, Dec. 1989, [Peer-reviewed]
English, Scientific journal - Structure and properties of YBaSrCu3Oy (y=6.2-7.3)
Y. Takeda; R. Kanno; O. Yamamoto; M. Takano; Z. Hiroi; Y. Bando; M. Shimada; H. Akinaga; K. Takita
Physica C: Superconductivity and its applications, 157, 2, 358, 364, 01 Feb. 1989, [Peer-reviewed]
English, Scientific journal - RELATION OF TC WITH HOLE CONCENTRATION IN SM1+XBA2-XCU3O7-DELTA, EU1+XBA2-XCU3O7-DELTA - HALL-EFFECT MEASUREMENT AND CHEMICAL-ANALYSIS
H AKINAGA; H KATOH; K TAKITA; K MASUDA
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 28, 1, L31, L33, Jan. 1989, [Peer-reviewed]
English, Scientific journal - RELATION BETWEEN SUPERCONDUCTING TC AND HOLE CONCENTRATION - HALL-EFFECT MEASUREMENT AND CHEMICAL-ANALYSIS IN CHARGE-DOPED AND OXYGEN-DOPED SYSTEM ND1+XBA2-XCU3O7-DELTA
K TAKITA; H AKINAGA; H KATOH; K MASUDA
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 27, 9, L1676, L1678, Sep. 1988, [Peer-reviewed]
English, Scientific journal - VARIATION OF SUPERCONDUCTING PROPERTIES WITH HOLE CONCENTRATION IN THE SOLID-SOLUTION SYSTEMS OF SM1+XBA2-XCU3O7-DELTA AND EU1+XBA2-XCU3O7-DELTA
H AKINAGA; H KATOH; K TAKITA; H ASANO; K MASUDA
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 27, 4, L610, L612, Apr. 1988, [Peer-reviewed]
English, Scientific journal - CORRELATION OF TC WITH HOLE CONCENTRATION IN COPPER-OXIDE SUPERCONDUCTORS - HALL-EFFECT MEASUREMENT IN ND1+XBA2-XCU3O7-DELTA
K TAKITA; H AKINAGA; H KATOH; K MASUDA
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 27, 4, L607, L609, Apr. 1988, [Peer-reviewed]
English, Scientific journal - HOLE CONCENTRATION COMPENSATION EFFECT AND SUPERCONDUCTING PROPERTIES OF ND1+XBA2-XCU3O7-DELTA
K TAKITA; H AKINAGA; H KATOH; H ASANO; K MASUDA
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 27, 1, L67, L69, Jan. 1988, [Peer-reviewed]
English, Scientific journal - X-RAY-DIFFRACTION STUDY ON THE CRYSTAL-STRUCTURE OF ND1+XBA2-XCU3O7-DELTA
K TAKITA; H KATOH; H AKINAGA; M NISHINO; T ISHIGAKI; H ASANO
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 27, 1, L57, L60, Jan. 1988, [Peer-reviewed]
English, Scientific journal - UPPER CRITICAL-FIELD AND ITS ANISOTROPY OF EUBA2CU3O7-X AND GDBA2CU3O7-X STUDIED IN PREFERENTIALLY ORIENTED PELLETS
K TAKITA; H AKINAGA; K MASUDA
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 26, 12, L2034, L2036, Dec. 1987, [Peer-reviewed]
English, Scientific journal - CRYSTAL-STRUCTURE OF BA2ERCU3O7-X DETERMINED BY NEUTRON POWDER DIFFRACTION
T ISHIGAKI; H ASANO; K TAKITA; H KATOH; H AKINAGA; F IZUMI; N WATANABE
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 26, 10, L1681, L1683, Oct. 1987, [Peer-reviewed]
English, Scientific journal - STUDIES ON ANISOTROPIC UPPER CRITICAL FIELDS OF HOBA2CU3O7-DELTA AND ERBA2CU3O7-DELTA USING PREFERENTIALLY ORIENTED PELLETS
K TAKITA; H AKINAGA; H KATOH; K MASUDA
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 26, 9, L1552, L1554, Sep. 1987, [Peer-reviewed]
English, Scientific journal - CRYSTAL-STRUCTURE OF THE HIGH-TC SUPERCONDUCTOR SMBA2CU3O7-DELTA, EUBA2CU3O7-DELTA AND GDBA2CU3O7-DELTA
H ASANO; K TAKITA; H KATOH; H AKINAGA; T ISHIGAKI; M NISHINO; M IMAI; K MASUDA
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 26, 8, L1410, L1412, Aug. 1987, [Peer-reviewed]
English, Scientific journal - CRYSTAL-STRUCTURE OF BA2HOCU3O7-X DETERMINED BY NEUTRON POWDER DIFFRACTION
H ASANO; K TAKITA; T ISHIGAKI; H AKINAGA; H KATOH; K MASUDA; F IZUMI; N WATANABE
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 26, 8, L1341, L1343, Aug. 1987, [Peer-reviewed]
English, Scientific journal - ANISOTROPIC UPPER CRITICAL FIELDS OF ORTHORHOMBIC SINGLE-PHASE YBA2CU3O7-DELTA STUDIED USING PREFERENTIALLY ORIENTED PELLETS
K TAKITA; H AKINAGA; H KATOH; T UCHINO; T ISHIGAKI; H ASANO
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 26, 8, L1323, L1325, Aug. 1987, [Peer-reviewed]
English, Scientific journal - SUPERCONDUCTIVITY TRANSITION AND CRYSTAL-STRUCTURE OF THE HIGH-TC AND HIGH-HC2 SUPERCONDUCTOR DYBA2CU3O7-DELTA
K TAKITA; H AKINAGA; H KATOH; T ISHIGAKI; H ASANO
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 26, 6, L1023, L1025, Jun. 1987, [Peer-reviewed]
English, Scientific journal - SHARP SUPERCONDUCTIVITY TRANSITION AT 94-K IN HOBA2CU3O7-DELTA AND ERBA2CU3O7-DELTA
K TAKITA; H AKINAGA; H KATOH; T IPPOSHI; K MASUDA
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 26, 5, L854, L855, May 1987, [Peer-reviewed]
English, Scientific journal - Crystal structure of the high tc superconductor LnBa2Cu3O7-δ (Ln=Sm, Eu and Gd)
Hajime Asano; Kôki Takita; Hideo Katoh; Hiroyuki Akinaga; Tōru Ishigaki; Makoto Nishino; Mitsugua Imai; Kohzoh Masuda
Japanese Journal of Applied Physics, 26, 8A, L1410, L1412, 1987, [Peer-reviewed]
English, Scientific journal - SUPERCONDUCTIVITY TRANSITION OF HIGH-TC Y-BA-CU-O SYSTEMS WITH MULTI-PHASE AND SINGLE-PHASE - TC AND HC2
K TAKITA; T IPPOSHI; T UCHINO; H AKINAGA; H KATOH; K MASUDA
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 26, 1043, 1044, 1987, [Peer-reviewed]
English, Scientific journal
- Thermoelectric Micro/Nano Generators: Fundamental Physics, Materials and Measurements
Hiroyuki Akinaga; Atsuko Kosuga; Takao Mori; Gustavo Ardila, Thermoelectric Micro/Nano Generators: Fundamental Physics, Materials and Measurements, 1, 241, 01 Jan. 2024
Others - Introduction: Landscape of Thermoelectric Generators in Energy Harvesting Technologies
Hiroyuki Akinaga; Atsuko Kosuga; Takao Mori, Thermoelectric Micro/Nano Generators 2: Challenges and Prospects, xiii, xix, 01 Jan. 2024
Others - Thermoelectric Micro/Nano Generators 2: Challenges and Prospects
Hiroyuki Akinaga; Atsuko Kosuga; Takao Mori; Gustavo Ardila, Thermoelectric Micro/Nano Generators 2: Challenges and Prospects, 1, 252, 01 Jan. 2024
Others - 合成領域の微細化による高品質MOF結晶の選択成長
清水敦史; 清水敦史; 木下健太郎; 中畝悠介; 島久; 高橋慎; 内藤泰久; 秋永広幸, 応用物理学会秋季学術講演会講演予稿集(CD-ROM), 79th, ROMBUNNO.20a‐222‐8, 05 Sep. 2018
Japanese - 動作電圧制御によるTaOx抵抗変化素子のアナログ抵抗変化特性の向上
島久; 高橋慎; 内藤泰久; 秋永広幸, 応用物理学会秋季学術講演会講演予稿集(CD-ROM), 79th, ROMBUNNO.18p‐432‐5, 05 Sep. 2018
Japanese - 化学状態の非破壊ナノイメージングを可能にする光電子顕微鏡開発
奥田裕司; 奥田裕司; 奥田裕司; 川北純平; 川北純平; 谷内敏之; 谷内敏之; 島久, 島久; 清水敦史; 清水敦史; 内藤泰久; 内藤泰久; 秋永広幸; 秋永広幸; 木下健太郎; 辛埴, 辛埴, 応用物理学会秋季学術講演会講演予稿集(CD-ROM), 79th, ROMBUNNO.20a‐222‐9, 05 Sep. 2018
Japanese - Research Progress on Resistance Change Device Based on Oxide Materials-Application for Non-volatile Memory and Neuromorphic Device-
島久; 高橋慎; 内藤泰久; 秋永広幸, 電子情報通信学会技術研究報告, 118, 173(ICD2018 14-38), 59‐64, 31 Jul. 2018
Japanese - アナログ型抵抗変化ニューロデバイス・システムのソフト・ハード一体型研究開発
秋永広幸; 島久; 内藤泰久; 浅井哲也, 電子情報通信学会技術研究報告, 118, 10(ICD2018 1-13), 15, 12 Apr. 2018
Japanese - Ta2O5抵抗変化素子のアナログ抵抗変化特性
島久; 高橋慎; 内藤泰久; 秋永広幸, 応用物理学会春季学術講演会講演予稿集(CD-ROM), 65th, ROMBUNNO.18p‐C102‐6, 05 Mar. 2018
Japanese - Ptナノギャップを用いた,対温度抵抗不変メモリの開発
内藤泰久; 阿部卓也; 乙津和希; 角谷透; 島久; 菅洋志; 塚越一仁; 秋永広幸, 応用物理学会春季学術講演会講演予稿集(CD-ROM), 65th, ROMBUNNO.17p‐F210‐11, 05 Mar. 2018
Japanese - レーザー励起光電子顕微鏡によるReRAMの化学状態の非破壊operando観測
川北純平; 川北純平; 島久, 島久; 内藤泰久; 内藤泰久; 秋永広幸; 秋永広幸; 谷内敏之; 谷内敏之; SHIN Shik; SHIN Shik, 応用物理学会春季学術講演会講演予稿集(CD-ROM), 65th, ROMBUNNO.18p‐C102‐9, 05 Mar. 2018
Japanese - c‐AFMおよびPEEMによるTaOx膜の抵抗変化記録スポット観察
三沢源人; 川北純平; 川北純平; 谷内敏之; 谷内敏之; SHIN Shik; SHIN Shik; 内藤泰久; 内藤泰久; 島久, 島久; 秋永広幸; 秋永広幸, 応用物理学会春季学術講演会講演予稿集(CD-ROM), 65th, ROMBUNNO.18p‐C102‐7, 05 Mar. 2018
Japanese - Ta2O5の抵抗変化を利用した水素ガスセンサー素子
島久; 内藤泰久; WEI Z; 本間運也; 藤井覚; 角谷透; 秋永広幸, 応用物理学会秋季学術講演会講演予稿集(CD-ROM), 78th, ROMBUNNO.5p‐A202‐13, 25 Aug. 2017
Japanese - レーザー励起光電子顕微鏡によるReRAMの化学状態の非破壊観測
川北純平; 川北純平; 島久, 島久; 内藤泰久; 内藤泰久; 秋永広幸; 秋永広幸; 谷内敏之; 谷内敏之; SHIN Shik; SHIN Shik, 応用物理学会秋季学術講演会講演予稿集(CD-ROM), 78th, ROMBUNNO.5p‐A202‐10, 25 Aug. 2017
Japanese - 熱アニールによるHfO2膜変化の導電AFM観察
三沢源人; 島久; 内藤泰久; 秋永広幸, 応用物理学会春季学術講演会講演予稿集(CD-ROM), 63rd, 4, ROMBUNNO.21P-H111-14, 41501, 03 Mar. 2016
A bipolar one-diode–one-resistor (1D1R) device with a Pt/HfO2 /Ti/n-Si(001) structure was demonstrated. The 1D1R resistive random access memory (RRAM) device consists of a Ti/n-Si(001) diode and a Pt/HfO2 /Ti resistive switching cell. By using the Ti layer as the shared electrode for both the diode and the resistive switching cell, the 1D1R device exhibits the property of stable self-compliance and the characteristic of robust resistive switching with high uniformity. The high/low resistance ratio reaches 103. The electrical RESET/SET curve does not deteriorate after 68 loops. Low-temperature studies show that the 1D1R RRAM device has a critical working temperature of 250 K, and at temperatures below 250 K, the device fails to switch its resistances., Institute of Physics, Japanese - 電子ビーム吸収電流(EBAC)法によるReRAMのメモリ動作領域の解析
島久; 秋永広幸, 応用物理学会春季学術講演会講演予稿集(CD-ROM), 62nd, ROMBUNNO.14A-D10-7, 26 Feb. 2015
Japanese - 抵抗変化メモリReRAMにおけるナノスケール熱制御
秋永広幸; 島久, 応用物理学会春季学術講演会講演予稿集(CD-ROM), 62nd, ROMBUNNO.14A-B2-11, 26 Feb. 2015
Japanese - Impact of oxidization, nitridation, and process temperature on materials for ReRAM
SHIMA Hisashi; AKINAGA Hiroyuki, 応用物理学会春季学術講演会講演予稿集(CD-ROM), 61st, ROMBUNNO.18P-E1-7, 03 Mar. 2014
English - 酸化物エレクトロニクスの進展と将来展望 4.機能性酸化物を用いた不揮発性メモリRRAM―メモリ動作の信頼性向上を目指して―
秋永広幸; 玉井幸夫; 島久; 粟屋信義, 電子情報通信学会誌, 97, 3, 198, 204, 01 Mar. 2014
抵抗変化ランダムアクセスメモリ(RRAM)は,機能性酸化物の不揮発性抵抗スイッチ効果を利用したメモリである.この抵抗スイッチ効果は,電流誘起の酸化還元反応によるものであり,抵抗変化が高速かつ巨大であって,原理的にはその巨大な抵抗変化比を保ったまま超微細化できるという特長を備えている.一方で,抵抗変化の起源が固体化学反応であることから,メモリ動作における抵抗値の安定性に幾つかの課題がある.本稿では,信頼性向上に向けた技術課題を中心に,RRAM研究開発の現状と将来展望を解説する., The Institute of Electronics, Information and Communication Engineers, Japanese - Open foundry to spur open-innovation - Establishment of a foundry to realize an innovative cooperation platform and development of its sustainable management strategy -
秋永広幸, Synthesiology, 7, 1, 16-26 (J-STAGE), 26, 2014
産業技術総合研究所, Japanese - Recent Advances and Future Prospects in Functional-Oxide Nanoelectronics: The Emerging Materials and Novel Functionalities that are Accelerating Semiconductor Device Research and Development
AKINAGA Hiroyuki, Jpn J Appl Phys, 52, 10,Issue 1, 100001.1-100001.12, 25 Oct. 2013
English - 二酸化ハフニウムを用いた抵抗変化メモリの電気伝導特性に関する第一原理計算
宮崎剛英; 中村恒夫; 西尾憲吾; 島久; 秋永広幸; 浅井美博, 応用物理学会秋季学術講演会講演予稿集(CD-ROM), 74th, ROMBUNNO.20P-D6-8, 31 Aug. 2013
Japanese - HfO2ゲート酸化膜を用いた強相関酸化物(Nd,Sm)NiO3の電子相制御
浅沼周太郎; 島久; 山田浩之; 井上公; 赤穗博司; 秋永広幸; 澤彰仁, 応用物理学会春季学術講演会講演予稿集(CD-ROM), 60th, ROMBUNNO.28A-F2-4, 11 Mar. 2013
Japanese - レーザー励起光電子顕微鏡による垂直磁化薄膜の高分解能磁気イメージング
阿部真之介; 谷内敏之; 小谷佳範; 蜂谷智央; 大塚照久; 島久; 秋永広幸; SHIN Shik, 応用物理学会春季学術講演会講演予稿集(CD-ROM), 60th, ROMBUNNO.30A-A8-8, 11 Mar. 2013
Japanese - 計算シミュレーション技術の活用と産業普及への取り組み 動作電圧の極低電圧化を目指した抵抗変化型メモリーのオン・オフ機構の理論解明
宮崎剛英; 中村恒夫; 西尾憲吾; 浅井美博; 島久; 秋永広幸, 産総研TODAY(Web), 13, 2, 8 (WEB ONLY), Feb. 2013
Japanese - Recent advances and prospects in functional-oxide nanoelectronics : The emerging materials and novel functionality that are accelerating semiconductor-device R&D
AKINAGA Hiro, 應用物理, 81, 12, 980, 989, 10 Dec. 2012
応用物理学会, Japanese - Hierarchical Three-Dimensional Layer-by-Layer Assembly of Carbon Nanotube Wafers for Integrated Nanoelectronic Devices
Takeo Yamada; Natsumi Makiomoto; Atsuko Sekiguchi; Yuki Yamamoto; Kazufumi Kobashi; Yuhei Hayamizu; Yoshiki Yomogida; Hiroyuki Tanaka; Hisashi Shima; Hiroyuki Akinaga; Don N. Futaba; Kenji Hata, NANO LETTERS, 12, 9, 4540, 4545, Sep. 2012
English - Effect of Annealing Temperature on TiO2-Based Thin-Film-Transistor Performance
Ni Zhong; Jun Jun Cao; Hisashi Shima; Hiro Akinaga, IEEE ELECTRON DEVICE LETTERS, 33, 7, 1009, 1011, Jul. 2012
English - Characterization and Control of Nanostructure Size Variation
Nobuhiro Hata; Hiro Akinaga, JAPANESE JOURNAL OF APPLIED PHYSICS, 51, 5, 05EC05.1-05EC05.4, May 2012
English - Self-Assembled Growth of Spinel (Fe,Zn)(3)O-4-Perovskite BiFeO3 Nanocomposite Structures Using Pulsed Laser Deposition
Takuya Sakamoto; Azusa N. Hattori; Teruo Kanki; Ken Hattori; Hiroshi Daimon; Hiroyuki Akinaga; Hidekazu Tanaka, JAPANESE JOURNAL OF APPLIED PHYSICS, 51, 3, 035504.1-035504.4, 4, Mar. 2012
English - CNT-MFM探針のコート厚依存性-シミュレーションおよび実験-
眞砂卓史; 浅田裕法; 渦巻拓也; 高野史好; 秋永広幸; 倉持宏実, 応用物理学関係連合講演会講演予稿集(CD-ROM), 59th, 2012 - ReRAM technology; challenges and prospects
Hiro Akinaga; Hisashi Shima, IEICE ELECTRONICS EXPRESS, 9, 8, 795, 807, 2012
English - Mechanism of the performance improvement of TiO2-x-based field-effect transistor using SiO2 as gate insulator (vol 1, 032167, 2011)
Ni Zhong; Hisashi Shima; Hiro Akinaga, AIP ADVANCES, 1, 4, Dec. 2011
English, Others - Epitaxial growth and magnetic characterization of ferromagnetic Co4N thin films on SrTiO3(001) substrates by molecular beam epitaxy
Keita Ito; Kazunori Harada; Kaoru Toko; Hiro Akinaga; Takashi Suemasu, JOURNAL OF CRYSTAL GROWTH, 336, 1, 40, 43, Dec. 2011
English - X-ray magnetic circular dichroism of ferromagnetic Co4N epitaxial films on SrTiO3(001) substrates grown by molecular beam epitaxy
Keita Ito; Kazunori Harada; Kaoru Toko; Mao Ye; Akio Kimura; Yukiharu Takeda; Yuji Saitoh; Hiro Akinaga; Takashi Suemasu, APPLIED PHYSICS LETTERS, 99, 25, 252501, Dec. 2011
English - Fabrication of Fe3Si/CaF2 heterostructures ferromagnetic resonant tunneling diode by selected-area molecular beam epitaxy
Kenji Sadakuni-Makabe; Mitsushi Suzuno; Kazunori Harada; Takashi Suemasu; Hiro Akinaga, THIN SOLID FILMS, 519, 24, 8509, 8511, Oct. 2011
English - Dependence of Resonant Voltage on Quantum-Well Width in CaF2/Fe3Si/CaF2 Resonant Tunneling Diodes
Kenji Sadakuni-Makabe; Mitsushi Suzuno; Kazunori Harada; Hiro Akinaga; Takashi Suemasu, JAPANESE JOURNAL OF APPLIED PHYSICS, 50, 10, 108002.1-108002.2, 2, Oct. 2011
English - Molecular beam epitaxy of ferromagnetic gamma '-Fe4N thin films on LaAlO3(100), SrTiO3(100) and MgO(100) substrates
Keita Ito; Geun Hyoung Lee; Hiro Akinaga; Takashi Suemasu, JOURNAL OF CRYSTAL GROWTH, 322, 1, 63, 68, May 2011
English - Improvement of Rectifying Property in Pt/TiOx/Pt by Controlling Oxidization of TiOx Layer
Ni Zhong; Hisashi Shima; Hiro Akinaga, JAPANESE JOURNAL OF APPLIED PHYSICS, 50, 4, 04DH04.1-04DH04.3, 3, Apr. 2011
English - Observation of magnetic domain structures in epitaxial MnAs film on GaAs(001) with temperature hysteresis
JinBae Kim; Hiro Akinaga; Jongryoul Kim, APPLIED PHYSICS LETTERS, 98, 10, 102511, Mar. 2011
English - Direct observation of the spin configurations of vertical Bloch line
JinBae Kim; Hiro Akinaga; Jongryoul Kim, APPLIED PHYSICS LETTERS, 98, 5, 052510, 3, Jan. 2011
English - Technology overview of resistive random access memory (ReRAM) based on functional oxide materials
SHIMA Hisashi; AKINAGA Hiroyuki, Proc Int Symp Dry Process, 33rd, 7, 8, 2011
English - Resistive Random Access Memory (ReRAM) Based on Metal Oxides
Hiroyuki Akinaga; Hisashi Shima, PROCEEDINGS OF THE IEEE, 98, 12, 2237, 2251, Dec. 2010
English - Improved Reproducibility in CaF2/Fe3Si/CaF2 Ferromagnetic Resonant Tunneling Diodes on Si(111) Substrates by Selected-Area Molecular Beam Epitaxy
Kenji Sadakuni-Makabe; Mitsushi Suzuno; Kazunori Harada; Hiro Akinaga; Takashi Suemasu, JAPANESE JOURNAL OF APPLIED PHYSICS, 49, 6, 060212.1-060212.3, Jun. 2010
English - Nanoscale chemical state analysis of resistance random access memory device reacting with Ti
Hisashi Shima; Takashi Nakano; Hiro Akinaga, APPLIED PHYSICS LETTERS, 96, 19, 192107, May 2010
English - 応用物理学分野のアカデミック・ロードマップ 磁性・スピントロニクス
岡林潤; 近藤剛; 千葉大地; 野崎隆行; 清水大雅; 川畑史郎; 秋永広幸, 応用物理, 79, 8, 720, 722, 2010 - Rectifying characteristic of Pt/TiOx/metal/Pt controlled by electronegativity
Ni Zhong; Hisashi Shima; Hiro Akinaga, APPLIED PHYSICS LETTERS, 96, 4, 042107, Jan. 2010
English - Transient Current Study on Pt/TiO2-x/Pt Capacitor
Ni Zhong; Hisashi Shima; Hiro Akinaga, JAPANESE JOURNAL OF APPLIED PHYSICS, 49, 4, 04DJ15.1-04DJ15.3, 2010
English - CaF2/Fe3Si/CaF2 Ferromagnetic Resonant Tunneling Diodes on Si(111) by Molecular Beam Epitaxy
Kenji Sadakuni; Teddy Harianto; Hiro Akinaga; Takashi Suemasu, APPLIED PHYSICS EXPRESS, 2, 6, 063006.1-063006.3, Jun. 2009
English - Switchable Pt/TiO2-x/Pt Schottky Diodes
Ni Zhong; Hisashi Shima; Hiro Akinaga, JAPANESE JOURNAL OF APPLIED PHYSICS, 48, 5, 05DF03.1-05DF03.4, May 2009
English - Rectifying characteristics of Pt/TiO2-x/Metal
ZHONG N; SHIMA Hisashi; AKINAGA Hiroyuki, 応用物理学関係連合講演会講演予稿集, 56th, 2, 625, 30 Mar. 2009
English - Switchable rectifier built with Pt/TiOx/Pt trilayer
Hisashi Shima; Ni Zhong; Hiro Akinaga, APPLIED PHYSICS LETTERS, 94, 8, 082905, Feb. 2009
English - Structural And Magnetic Properties Of Mn-Doped SiC
Fumiyoshi Takano; Wenhong Wang; Hironori Ofuchi; Takeshi Ohshima; Hiro Akinaga, PHYSICS OF SEMICONDUCTORS, 1199, 443, +, 2009
English - Magnetron sputtering deposition of Pr12.5Fe77.5B10 thin films and substrate temperature dependence of the magnetic properties
Wenyong Zhang; Hisashi Shima; Fumiyoshi Takano; Masato Takenaka; Hiroyuki Akinaga; Shigeki Nimori, JOURNAL OF PHYSICS D-APPLIED PHYSICS, 42, 2, 025004,1-5, Jan. 2009
English - Ladder-type magnetic structures in MnAs epitaxial films-measurements and micromagnetic simulations
Takashi Manago; Hiro Akinaga, JOURNAL OF APPLIED PHYSICS, 104, 9, 093901, Nov. 2008
English - Development of silicon-based spintronic devices
AKINAGA Hiro; TAKANO Fumiyoshi; SHIMA Hisashi; SUEMASU Takashi, 日本磁気学会学術講演概要集, 32nd, 38, 39, 12 Sep. 2008
English - Voltage polarity dependent low-power and high-speed resistance switching in CoO resistance random access memory with Ta electrode
Hisashi Shima; Fumiyoshi Takano; Hidenobu Muramatsu; Hiro Akinaga; Yukio Tamai; Isao H. Inoue; Hidenori Takagi, APPLIED PHYSICS LETTERS, 93, 11, 113504, Sep. 2008
English - Soft X-ray absorption and photoemission studies of ferromagnetic Mn-implanted 3C-SiC
Gyong Sok Song; Masaki Kobayashi; Jong Il Hwang; Takashi Kataoka; Masaru Takizawa; Atsushi Fujimori; Takuo Ohkochi; Yukiharu Takeda; Tetsuo Okane; Yuji Saitoh; Hiroshi Yamagami; Fumiyoshi Takano; Hiro Akinaga, JAPANESE JOURNAL OF APPLIED PHYSICS, 47, 9, 7113, 7116, Sep. 2008
English - 22pYG-16 Photoelectron emission microscopy with pulsed UV Laser
Taniuchi T.; Tanaka M.; Togashi T.; Ono K.; Akinaga H; Oshima M.; Shin S., Meeting abstracts of the Physical Society of Japan, 63, 2, 139, 139, 25 Aug. 2008
The Physical Society of Japan (JPS), Japanese - 22pYG-16 Photoelectron emission microscopy with pulsed UV Laser
Taniuchi T.; Tanaka M.; Togashi T.; Ono K.; Akinaga H.; Oshima M.; Shin S., Meeting abstracts of the Physical Society of Japan, 63, 2, 681, 681, 25 Aug. 2008
The Physical Society of Japan (JPS), Japanese - Reactive Ion Etching Process of Transition-Metal Oxide for Resistance Random Access Memory Device
Fumiyoshi Takano; Hisahi Shima; Hidenobu Muramatsu; Yutaka Kokaze; Yutaka Nishioka; Koukou Suu; Hirofumi Kishi; Nelson Buntimil Arboleda; Melanie David; Tanglaw Roman; Hideaki Kasai; Hiro Akinaga, JAPANESE JOURNAL OF APPLIED PHYSICS, 47, 8, 6931, 6933, Aug. 2008
English - Structural and Magnetic Properties of Nitrogen Doped GaMnAs
Takashi Manago; Hiro Akinaga, JAPANESE JOURNAL OF APPLIED PHYSICS, 47, 8, 6297, 6301, Aug. 2008
English - Fabrication and Current-Voltage Characteristics of Fe3Si/CaF2/Fe3Si Magnetic Tunnel Junction
Teddy Harianto; Kenji Sadakuni; Hiro Akinaga; Takashi Suemasu, JAPANESE JOURNAL OF APPLIED PHYSICS, 47, 8, 6310, 6311, Aug. 2008
English - Anomalous temperature-dependent exchange bias in Fe films deposited on Si substrates with the native oxide layer
Wenhong Wang; Fumiyoshi Takano; Masato Takenaka; Hiro Akinaga; Hironori Ofuchi, JOURNAL OF APPLIED PHYSICS, 103, 9, 093914, May 2008
English - Electrode Material Dependence on Binary Oxide RRAM Characteristics
TAMAI Yukio; SHIMA Hisashi; AKINAGA Hiroyuki; HOSOI Yasunari; OHNISHI Shigeo; AWAYA Nobuyoshi, IEICE technical report, 108, 6, 79, 81, 10 Apr. 2008
We have synthesized Ta/Co-O/Pt RRRAM and 20ns high-speed switching and low writing current around 100μA with excellent endurance reliability was demonstrated. The electrode materials which are easily oxidized at the electrode/oxide interface and the interface oxides have a high resistivity lower the erasing current significantly by current regulation during forming., The Institute of Electronics, Information and Communication Engineers, Japanese - Electrical spin injection from an iron-rich iron-platinum thin film into gallium arsenide
Asawin Sinsarp; Takashi Manago; Fumiyoshi Takano; Hiro Akinaga, JOURNAL OF NONLINEAR OPTICAL PHYSICS & MATERIALS, 17, 1, 105, 109, Mar. 2008
English - 23pPSB-54 Local structure analysis of ferromagnetic 3C-SiC:Mn fabricated by ion implantation
Takano Fumiyoshi; Ofuchi Hironori; Wang Wenhong; Hishiki Shigeomi; Ohshima Takeshi; Akinaga Hiroyuki, Meeting abstracts of the Physical Society of Japan, 63, 1, 667, 667, 29 Feb. 2008
The Physical Society of Japan (JPS), Japanese - Origin of uniaxial magnetic anisotropy in epitaxial MnAs film on GaAs(001) substrate
Kwang-Su Ryu; Jin Bae Kim; Young Pak Lee; Hiro Akinaga; Takashi Manago; Ravindranath Viswan; Sung-Chul Shin, APPLIED PHYSICS LETTERS, 92, 8, 082503, Feb. 2008
English - Electrical spin injection from an iron-rich iron-platinum thin film into gallium arsenide
Asawin Sinsarp; Takashi Manago; Fumiyoshi Takano; Hiro Akinaga, INTERNATIONAL WORKSHOP AND CONFERENCE ON PHOTONICS AND NANOTECHNOLOGY 2007, 6793, 67930K.1-67930K.5, 2008
English - Control of resistance switching voltages in rectifying Pt/TiO(x)/Pt trilayer
Hisashi Shima; Fumiyoshi Takano; Hidenobu Muramatsu; Hiro Akinaga; Isao H. Inoue; Hidenori Takagi, APPLIED PHYSICS LETTERS, 92, 4, 043510, Jan. 2008
English - Growth condition dependence of spin-polarized electroluminescence in Fe/MgO/light-emitting diodes
Takashi Manago; Asawin Sinsarp; Hiro Akinaga, JOURNAL OF APPLIED PHYSICS, 102, 8, 083914, Oct. 2007
English - Epitaxial growth and magnetic properties of Fe3Si/CaF2/Fe3Si tunnel junction structures on CaF2/Si(111)
Teddy Harianto; Ken'ichi Kobayashi; Takashi Suemasu; Hiro Akinaga, JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 46, 36-40, L904, L906, Oct. 2007
English - Magnetic Force Microscopy using Carbon Nanotube Probes
AKINAGA H.; KURAMOCHI H., 日本応用磁気学会研究会資料, 155, 19, 24, 25 Aug. 2007
Japanese - 22aTG-12 Structure and magnetism of Mn-doped 3CSiC fabricated using ion implantation
Takano Fumiyoshi; Wang Wenhong; Ofuchi Hironori; Hishiki Shigeomi; Ohshima Takeshi; Akinaga Hiroyuki, Meeting abstracts of the Physical Society of Japan, 62, 2, 689, 689, 21 Aug. 2007
The Physical Society of Japan (JPS), Japanese - A comparative investigation on the effect of oxygen atom and molecules in the reactive ion etching of NiO thin films
DAVID Melanie; ROMAN Tanglaw; KISHI Hirofumi; NAKANISHI Hiroshi; DINO Wilson; KASAI Hideaki; TAKANO Fumiyoshi; SHIMA Hisashi; AKINAGA Hiro, 日本物理学会講演概要集, 62, 2, 476, 476, 21 Aug. 2007
The Physical Society of Japan (JPS), English - Tunable scaling behaviour observed in Barkhausen criticality of a ferromagnetic film
Kwang-Su Ryu; Hiro Akinaga; Sung-Chul Shin, NATURE PHYSICS, 3, 8, 547, 550, Aug. 2007
English - Magnetoresistance in epitaxially grown MnAs films on GaAs substrates
Takashi Manago; Asawin Sinsarp; Hiro Akinaga, JOURNAL OF APPLIED PHYSICS, 102, 3, 033920, Aug. 2007
English - Resistance switching in the metal deficient-type oxides: NiO and CoO
Hisashi Shima; Fumiyoshi Takano; Hiro Akinaga; Yukio Tamai; Isao H. Inoue; Hide Takagi, APPLIED PHYSICS LETTERS, 91, 1, 012901, Jul. 2007
English - High Speed Unipolar Switching Resistance RAM (RRAM) Technology
HOSOI Y; TAMAI Y; OHNISHI T; ISHIHARA K; SHIBUYA T; INOUE Y; YAMAZAKI S; NAKANO T; OHNISHI S; AWAYA N; INOUE I. H; SHIMA H; AKINAGA H; TAKAGI H; AKOH H; TOKURA Y, IEICE technical report, 107, 1, 77, 82, 05 Apr. 2007
We have successfully achieved high speed (〜50 ns) unipolar operation in RRAM devices comprised of titanium oxynitride (TiON) combined with a control resistor connected in series. For unipolar switching, programming and erasing pulses can be the same width, typically, a few tens of nano-seconds. This enables high speed and high density cross-point RRAM memory arrays. In addition, we make clear why conventional unipolar switching mode cannot achieve high speed. Moreover, we demonstrate how switching characteristics can be controlled by a series-connected load resistor., 一般社団法人電子情報通信学会, Japanese - 14th International Conference on Molecular Beam Epitaxy (MBE-XIV) 3-8 September 2006 - Waseda University, Tokyo, Japan
J. Yoshino; H. Akinaga; H. Asahi, JOURNAL OF CRYSTAL GROWTH, 301, 1, 1, Apr. 2007
English, Others - Structural, magnetic, and magnetotransport properties of Mn-Si films synthesized on a 4H-SiC(0001) wafer
Wenhong Wang; Fumiyoshi Takano; Hiro Akinaga; Hironori Ofuchi, PHYSICAL REVIEW B, 75, 16, 165323.1-165323.10, Apr. 2007
English - Spin Injection from FePt/MgO Tunneling Junction into GaAs Investigated by Spin-Polarized Electroluminescence
ASAWIN Sinsarp; MANAGO Takashi; TAKANO Fumiyoshi; AKINAGA Hiro, 応用物理学関係連合講演会講演予稿集, 54th, 1, 522, 27 Mar. 2007
English - Growth and crystallization processes of fully epitaxial Fe/MgO/light-emitting diodes for spin injections
Asawin Sinsarp; Takashi Manago; Hiro Akinaga, JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 310, 2, E693, E695, Mar. 2007
English - Direct observation of electroluminescence properties on magnetoresistive switch effect in Au/GaAs junctions
Takashi Manago; Zhi-Gang Sun; Takashi Tokizaki; Hiro Akinaga, JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 310, 2, E655, E657, Mar. 2007
English - Magnetic properties of transparent SiC : Mn films synthesized on SiC substrates
Wenhong Wang; Fumiyoshi Takano; Hironori Ofuchi; Hiro Akinaga, JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 310, 2, 2141, 2143, Mar. 2007
English - Highly selective reactive-ion etching for NiFe with Ti mask by inductively coupled plasma
Tomomi Kanazawa; Shin-ichi Motoyama; Takayuki Wakayama; Hiroyuki Akinaga, JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 310, 2, E745, E747, Mar. 2007
English - Pseudogap formation in MnPt and MnPd alloys
Masato Kubota; Kanta Ono; Rie Y. Umetsu; Hiroyuki Akinaga; Akimasa Sakuma; Kazuaki Fukamichi, APPLIED PHYSICS LETTERS, 90, 9, 091911-091911-3, Feb. 2007
English - Reactive Ion Etching of Transition-Metal Oxides
TAKANO Fumiyoshi; SHIMA Hisashi; KOKAZE Yutaka; NISHIOKA Yutaka; SUU Koukou; DAVID Melanie; ROMAN Tanglaw; KASAI Hideaki; AKINAGA Hiro, プラズマ科学シンポジウム/プラズマプロセシング研究会プロシーディングス, 24th, 145, 146, 29 Jan. 2007
English - Applying Computational NanoMaterials Design on the Reactive Ion Etching of Metal Oxide Surfaces
DAVID Melanie; MUHIDA Rifki; ROMAN Tanglaw; NAKANISHI Hiroshi; DINO Wilson; KASAI Hideaki; TAKANO Fumiyoshi; SHIMA Hisashi; AKINAGA Hiroyuki, プラズマ科学シンポジウム/プラズマプロセシング研究会プロシーディングス, 24th, 147, 148, 29 Jan. 2007
English - High Speed Unipolar Switching Resistance RAM (RRAM) Technology
HOSOI Y; TAMAI Y; OHNISHI T; ISHIHARA K; SHIBUYA T; INOUE Y; YAMAZAKI S; NAKANO T; OHNISHI S; AWAYA N; INOUE I. H; SHIMA H; AKINAGA H; TAKAGI H; AKOH H; TOKURA Y, IEICE technical report, 106, 504, 17, 20, 19 Jan. 2007
We have successfully achieved high speed (〜50 ns) unipolar operation in RRAM devices comprised of titanium oxynitride (TiON) combined with a control resistor connected in series. For unipolar switching, programming and erasing pulses can be the same width, typically, a few tens of nano-seconds. This enables high speed and high density cross-point RRAM memory arrays, In addition, we make clear why conventional unipolar switching mode cannot achieve high speed. Moreover, we demonstrate how switching characteristics can be controlled by a series-connected load resistor., 一般社団法人電子情報通信学会, Japanese - Hard X-ray Photoelectron Emission Microscopy (HXPEEM)
小野寛太; 谷内敏之; 尾嶋正治; 脇田高徳; 小嗣真人; 鈴木基寛; 河村直己; 高垣昌史; 秋永広幸, 表面科学, 28, 12, 2007 - Synthesis of magnetic COPt/SiO2 core-shell nanoparticles
Takafumi Seto; Kenji Koga; Fumiyoshi Takano; Hiroyuki Akinaga; Takaaki Orii; Makoto Hirasawa; Mitsuhiro Murayama, COLA'05: 8TH INTERNATIONAL CONFERENCE ON LASER ABLATION, 59, 255, +, 2007
English - 22aTG-11 PES and XAS study of ferromagnetic SiC:Mn
Song G.S; Saitoh Y; Yamagami H; Takano F; Akinaga H; Kobayashi M; Hwang J.I; Fujimori A; Ohkochi T; Takeda Y; Terai K; Fujimori S-I; Okane T, Meeting Abstracts of the Physical Society of Japan, 62, 0, 689, 689, 2007
The Physical Society of Japan, Japanese - RIE Process of Transition-Metal Oxide for RRAM Device
TAKANO Fumiyoshi; SHIMA Hisashi; MURAMATSU Hidenobu; KOKAZE Yutaka; NISHIOKA Yutaka; SUU Koukou; KISHI Hirofumi; ARBOLEDA Nelson Buntimil,Jr; DAVID Melanie; ROMAN Tanglaw; KASAI Hideaki; AKINAGA Hiro, Proc Int Symp Dry Process, 2007, 99, 100, 2007
English - Fluorescence EXAFS analysis of SiC : Mn films synthesized on SiC substrates
Hironori Ofuchi; Wenhong Wang; Fumiyoshi Takano; Hiro Akinaga, X-RAY ABSORPTION FINE STRUCTURE-XAFS13, 882, 443, +, 2007
English - Magnetic and transport properties of Mn-Si films synthesized on 4H-SiC(0001) substrates
Wenhong Wang; Fumiyoshi Takano; Hironori Ofuchi; Hiro Akinaga, 2006 BIMW: 2006 BEIJING INTERNATIONAL MATERIALS WEEK, PTS 1-4, 546-549, Pt.4, 2167, +, 2007
English - Electrical spin injection from out-of-plane magnetized FePt/MgO tunneling junction into GaAs at room temperature
Asawin Sinsarp; Takashi Manago; Fumiyoshi Takano; Hiro Akinaga, JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 46, 1-3, L4, L6, Jan. 2007
English - Synthesis and characterization of Pt/Co-O/Pt trilayer exhibiting large reproducible resistance switching
Hisashi Shima; Fumiyoshi Takano; Yukio Tamai; Hiro Akinaga; Isao H. Inoue, JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 46, 1-3, L57, L60, Jan. 2007
English - Thickness-dependent magnetic domain change in epitaxial MnAs films on GaAs(001)
Kwang-Su Ryu; JinBae Kim; YoungPak Lee; Hiro Akinaga; Takashi Manago; Ravindranath Viswan; Sung-Chul Shin, APPLIED PHYSICS LETTERS, 89, 23, 232506-232506-3, Dec. 2006
English - Synthesis of magnetic COPt/SiO2 nano-composite by pulsed laser ablation
Takafumi Seto; Kenji Koga; Fumiyoshi Takano; Hiroyuki Akinaga; Takaaki Orii; Makoto Hirasawa; Mitsuhiro Murayama, JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 182, 3, 342, 345, Sep. 2006
English - Direct observation of magnetization reversal of epitaxial MnAs films
Takashi Manago; Hiro Akinaga, SURFACE SCIENCE, 600, 17, 3492, 3495, Sep. 2006
English - 25pPSB-32 A Density Functional Theory-based Investigations on Reactive Ion Etching on NiO Thin Films
DAVID Melanie; MATSUMOTO Shigeno; MUHIDA Rifki; ROMAN Tanglaw; KUNIKATA Shin-ichi; DINO Wilson Agerico; KASAI Hideaki; TAKANO Fumiyoshi; SHIMA Hisashi; AKINAGA Hiroyuki, Meeting abstracts of the Physical Society of Japan, 61, 2, 755, 755, 18 Aug. 2006
The Physical Society of Japan (JPS), English - 25pPSB-35 First principles study of reactive ion etching (RIE) processes on iron oxide surfaces using CO ions
Muhida R.; David M.; Roman T.; Matsumoto S.; Kunikata S.; Dino W.A.; Akinaga H.; Takano F.; Shima H.; Kasai H., Meeting abstracts of the Physical Society of Japan, 61, 2, 756, 756, 18 Aug. 2006
The Physical Society of Japan (JPS), English - 25pPSB-36 Ab-initio based reactive ion etching for transition-metal thin films
Matsumoto S.; David M.; Roman T.; Muhida R.; Dino Wilson Agerico; Kasai H.; Akinaga H.; Takano F.; Shima H., Meeting abstracts of the Physical Society of Japan, 61, 2, 756, 756, 18 Aug. 2006
The Physical Society of Japan (JPS), Japanese - Laser ablation synthesis of monodispersed magnetic alloy nanoparticles
Takafumi Seto; Kenji Koga; Hiroyuki Akinaga; Fumiyoshi Takano; Takaaki Orii; Makoto Hirasawa, JOURNAL OF NANOPARTICLE RESEARCH, 8, 3-4, 371, 378, Aug. 2006
English - Magnetic field dependence on electroluminescence properties, of metal-insulator-metal devices consisting of Au/GaAs junctions
Takashi Manago; Zhi-Gang Sun; Hiro Akinaga, JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 45, 7, 5685, 5688, Jul. 2006
English - Reactive ion etching of beta-FeSi2 with inductively coupled plasma
Takayuki Wakayama; Takashi Suemasu; Tomomi Kanazawa; Hiroyuki Akinaga, JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 45, 20-23, L569, L571, Jun. 2006
English - Nanosecond excitonic spin relaxation in cubic GaN
A Tackeuchi; H Otake; Y Ogawa; T Ushiyama; T Fujita; F Takano; H Akinaga, APPLIED PHYSICS LETTERS, 88, 16, 162114-162114-3, Apr. 2006
English - Anisotropic Magnetoresistance of Epitaxial MnAs Thin Films with Ladder-Type Magnetic Domains
SINSARP Asawin; MANAGO Takashi; AKINAGA Hiroyuki, 応用物理学関係連合講演会講演予稿集, 53rd, 1, 486, 22 Mar. 2006
English - 30aPS-58 Potential energy surface (PES) for reactive ion etching (RIE) on FeNi_4 cluster
Muhida R; David M; Matsumoto S; Dino W.A; Nakanishi H; Akinaga H; Kasai H, Meeting abstracts of the Physical Society of Japan, 61, 1, 908, 908, 04 Mar. 2006
The Physical Society of Japan (JPS), English - Hard X-ray photoelectron emission microscopy as tool for studying buried layers
T Wakita; T Taniuchi; K Ono; M Suzuki; N Kawamura; M Takagaki; H Miyagawa; FZ Guo; T Nakamura; T Muro; H Akinaga; T Yokoya; M Oshima; K Kobayashi, JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 45, 3A, 1886, 1888, Mar. 2006
English - Real-time direct observation of temperature-dependent domain reversal behavior in epitaxial MnAs film on GaAs(001)
KS Ryu; SC Shin; H Akinaga; T Manago, APPLIED PHYSICS LETTERS, 88, 12, 122509-122509-3, Mar. 2006
English - Reactive Ion Etching of .BETA.-FeSi2 film on Si(111)
WAKAYANMA Takayuki; SUEMASU Takashi; KANAZAWA Tomomi; AKINAGA Hiroyuki, プラズマ科学シンポジウム/プラズマプロセシング研究会プロシーディングス, 23rd, 469, 470, 2006
English - Reactive Ion Etching for Ni-Fe by Inductively Coupled Plasma
KANAZAWA Tomomi; MOTOYAMA Shin‐ichi; WAKAYAMA Takayuki; AKINAGA Hiroyuki, プラズマ科学シンポジウム/プラズマプロセシング研究会プロシーディングス, 23rd, 471, 472, 2006
English - Reactive Ion Etching for NiFe with organic resist and Ti masks by Inductively Coupled Plasma
KANAZAWA Tomomi; MOTOYAMA Shin-ichi; WAKAYAMA Takayuki; AKINAGA Hiroyuki, 電気学会研究会資料. MAG, マグネティックス研究会, 2005, 124, 11, 14, 05 Dec. 2005
Japanese - 反応性イオンエッチングプロセスにおけるNiFe及びCoFe表面の研究
渡辺晋; DINO Wilson Agerico; 中西寛; 笠井秀明; 秋永広幸, 応用物理学会学術講演会講演予稿集, 66th, 1, 436, 07 Sep. 2005
Japanese - 20aYH-12 Uniaxial magnetic anisotropy in La_<1-x>Sr_xMnO_3 thin films grown on atomically stepped substrates
Taniuchi T.; Yokoya T.; Wakita T.; Kumigashira H.; Oshima M.; Akinaga H.; Lippmaa Mikk; Kawasaki M.; Koinuma H.; Ono K., Meeting abstracts of the Physical Society of Japan, 60, 2, 425, 425, 19 Aug. 2005
The Physical Society of Japan (JPS), Japanese - 22pPSA-66 Incorporation of magnetic element Mn into SiC using an annealing method
Takano Fumiyoshi; Ofuchi Hironori; Kuroda Shinji; Akinaga Hiroyuki, Meeting abstracts of the Physical Society of Japan, 60, 2, 555, 555, 19 Aug. 2005
The Physical Society of Japan (JPS), Japanese - 21pXF-14 Etching Surfaces of Ferromagnetic Materials : Ab-Initio Based Process Design and Realization
Dino Wilson Agerico; Muhida Rifki; David Melanie Yadao, Meeting abstracts of the Physical Society of Japan, 60, 2, 779, 779, 19 Aug. 2005
The Physical Society of Japan (JPS), English - High-Resolution Magnetic Force Microscopy Using Carbon Nanotube Probes
AKINAGA H.; KURAMOCHI H.; YASUTAKE M.; UZUMAKI T.; TANAKA A., Journal of Magnetics Society of Japan, 29, 8, 767, 772, 01 Aug. 2005
Ferromagnetic-film coated carbon nanotube (CNT) probes were successfully fabricated by a radio-frequency sputtering method. The uniform coating on the CNT probes was achieved by improving the sputtering conditions. The performance of the CNT probes was investigated through magnetic force microscopy (MFM) observation of ultra-high-density perpendicular magnetic storage media with densities from 600 to 1100k flux changes per inch. The ultimate lateral resolution of the newly developed MFM probes reached down to 10nm., 日本応用磁気学会, Japanese - Magnetic properties of monodispersed Ni/NiO core-shell nanoparticles
T Seto; H Akinaga; F Takano; K Koga; T Orii; M Hirasawa, JOURNAL OF PHYSICAL CHEMISTRY B, 109, 28, 13403, 13405, Jul. 2005
English, Report scientific journal - CoFe-Coated carbon nanotube probes for magnetic force microscope
H Kuramochi; H Akinaga; Y Semba; N Kijima; T Uzumaki; M Yasutake; A Tanaka; H Yokoyama, JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 44, 4A, 2077, 2080, Apr. 2005
English - 27pWE-6 Photoelectron Emission Microscopy on La_<2-2x>Sr_<1+2x>Mn_2O_7
Kubota M.; Taniuchi T.; Oshima M.; Akinaga H.; Ono K., Meeting abstracts of the Physical Society of Japan, 60, 1, 615, 615, 04 Mar. 2005
The Physical Society of Japan (JPS), Japanese - 26pXP-9 Magnetic domain observation in La_<1-x>Sr_xMnO_3 thin films grown on atomically stepped substrates by photoelectron emission microscopy.
Taniuchi T.; Yokoya T.; Wakita T.; Kumigashira H.; Oshima M.; Akinaga H.; Lippmaa Mikk; Kawasaki M.; Koinuma H.; Ono K., Meeting abstracts of the Physical Society of Japan, 60, 1, 710, 710, 04 Mar. 2005
The Physical Society of Japan (JPS), Japanese - Real-time observation of charged excition drift in modulation-doped (Cd,Mn)Te quantum well
TAKANO Fumiyoshi; TOKIZAKI Takashi; AKINAGA Hiro; KURODA Shinji; TAKITA Koki, Phys Rev B Condens Matter Mater Phys, 71, 12, 125326.1-125326.5, Mar. 2005
English - Reactive ion etching of NiFe thin films from first-principles study: A case study
S Watanabe; WA Dino; H Nakanishi; H Kasai; H Akinaga, JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 44, 2, 893, 894, Feb. 2005
English - Magnetic-field-sensing materials composed of metal-semiconductor hybrid nanostructures
H Akinaga, JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 5, 2, 250, 254, Feb. 2005
English - MFM用磁性体薄膜コーティングCNT探針の作製
倉持宏実; 秋永広幸; 仙波靖之; 渦巻拓也; 安武正敏; 田中厚志; 横山浩, 応用物理学関係連合講演会講演予稿集, 52nd, 1, 2005 - 20aYH-5 Resistance Switching Phenomena and Electron Correlations
Inoue I. H; Rozenberg M. J; Sanchez M. J; Yasuda S; Akinaga H; Takagi H; Akoh H; Tokura Y, Meeting Abstracts of the Physical Society of Japan, 60, 0, 423, 423, 2005
一般社団法人 日本物理学会, Japanese - 反応性イオンエッチングプロセスにおけるHigh‐k材料ZrO2の表面
WATANABE Shin; WATANABE Shin; DINO Wilson Agerico; DAVID Melanie Yadao; MUHIDA Rifki; NAKANISHI Hiroshi; KASAI Hideaki; AKINAGA Hiroyuki, 真空に関する連合講演会講演予稿集, 46th, 143, 2005
English - Control and observation of excitonic motion in modulation-doped (Cd,Mn)Te quantum well
F Takano; T Tokizaki; H Akinaga; S Kuroda; K Takita, Ultrafast Phenomena in Semiconductors and Nanostructure Materials IX, 5725, 344, 351, 2005
English - Magnetoresistive switch effect and its application to magnetic field sensors
ZG Sun; M Mizuguchi; H Akinaga, PRICM 5: THE FIFTH PACIFIC RIM INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS AND PROCESSING, PTS 1-5, 475-479, Pt.3, 2223, 2226, 2005
English - Epitaxial growth of ferromagnetic Fe3Si films on CaF2/Si(111) by molecular beam epitaxy
T Sunohara; K Kobayashi; M Umada; H Yanagihara; E Kita; H Akinaga; T Suemasu, JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 44, 20-23, L715, L717, 2005
English - Search of SiC-based ferromagnetic semiconductor having a T_c above RT
TAKANO F.; AKINAGA H.; OFUCHI H.; LEE J. W.; TAKITA K., 日本応用磁気学会学術講演概要集 = Digest of ... annual conference on magnetics in Japan, 28, 512, 512, 21 Sep. 2004
Japanese - Vortex chirality control in mesoscopic magnets
TANIUCHI T.; OSHIMA M.; AKINAGA H.; ONO K., 日本応用磁気学会学術講演概要集 = Digest of ... annual conference on magnetics in Japan, 28, 146, 146, 21 Sep. 2004
Japanese - Perpendicular Magnetic Properties of CoCr Films on GaAs Substrate
MANAGO T.; KURAMOCHI H.; AKINAGA H., 日本応用磁気学会学術講演概要集 = Digest of ... annual conference on magnetics in Japan, 28, 105, 105, 21 Sep. 2004
Japanese - High-resolution MFM observation using carbon nanotube probes
AKINAGA H.; KURAMOCHI H.; YASUTAKE M.; UZUMAKI T.; TANAKA A., 日本応用磁気学会学術講演概要集 = Digest of ... annual conference on magnetics in Japan, 28, 66, 67, 21 Sep. 2004
Japanese - Magnetic Force Microscope Using Carbon Nanotube Probes
MANAGO T.; KURAMOCHI H.; UZUMAKI T.; YASUTAKE M.; TANAKA A.; AKINAGA H.; YOKOYAMA H., Extended abstracts of the ... Conference on Solid State Devices and Materials, 2004, 638, 639, 15 Sep. 2004
English - 金属磁性材料のエッチング表面について
渡辺晋; DINO W A; 秋永広幸; 中西寛; 笠井秀明, 応用物理学会学術講演会講演予稿集, 65th, 1, 390, 01 Sep. 2004
Japanese - Laser synthesis and magnetic properties of monodispersed core-shell nanoparticles
T Seto; K Koga; H Akinaga; F Takano; K Sakiyama; M Hirasawa; T Orii, APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 79, 4-6, 1165, 1167, Sep. 2004
English - Magnetization-induced second-harmonic generation in magnetic semiconductor (Ga,Mn)As
Yoshihiro Ogawa; Hiroyuki Akinaga; Fumiyoshi Takano; Takahisa Arima; Yoshinori Tokura, Journal of the Physical Society of Japan, 73, 9, 2389, 2392, Sep. 2004
English - 14aXC-3 X-ray magnetic imaging using PEEM
Ono K.; Taniuchi T.; Wakita T.; Kotsugi M.; Suzuki M.; Kawamura N.; Muraoka H.; Akinaga H.; Oshima M.; Kobayashi K., Meeting abstracts of the Physical Society of Japan, 59, 2, 679, 679, 25 Aug. 2004
The Physical Society of Japan (JPS), Japanese - 12pXC-5 Magnetization-induced second harmonic generation in (Ga, Mn)As
Okubo Y.; Ogawa Y.; Minami F.; Takano F.; Akinaga H., Meeting abstracts of the Physical Society of Japan, 59, 2, 638, 638, 25 Aug. 2004
The Physical Society of Japan (JPS), Japanese - 13pWB-13 Vortex chirality control in mesoscopic magnets
Taniuchi Toshiyuki; Oshima Masaharu; Akinaga Hiro; Ono Kanta, Meeting abstracts of the Physical Society of Japan, 59, 2, 392, 392, 25 Aug. 2004
The Physical Society of Japan (JPS), Japanese - Room-temperature ferromagnetic zinc-blende type CrAs thin films grown by molecular beam epitaxy
MIZUGUCHI Masaki; AKINAGA Hiro, Journal of the Japanese Association of Crystal Growth, 31, 3, 217, 217, 25 Aug. 2004
Recently half-metallic ferromagnetic materials have attracted great attentions due to the possibility of applications to 'spintronic' devices. In this contribution, an epitaxial growth of zinc-blende type CrAs film which is predicted by theoretical calculations to possess a half-metallic band structure is reported. The CrAs thin film shows a ferromagnetic behavior at room temperature. Fabrication of a superlattice including zinc-blende CrAs and GaAs is also reported., The Japanese Association for Crystal Growth (JACG), Japanese - Excitons diffusion in (Cd,Mn)Te-based two-dimensional electron system under magnetic fields
F Takano; T Tokizaki; H Akinaga; S Kuroda; K Takita, PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 22, 1-3, 615, 619, Apr. 2004
English - 29pXL-8 Optical reflectivity and pseudo-gap in MnPt and MnPd alloys
Kubota M; Umetsu R Y; Okimoto Y.; Ono K; Akinaga H; Fukamichi K; Sakuma A., Meeting abstracts of the Physical Society of Japan, 59, 1, 496, 496, 03 Mar. 2004
The Physical Society of Japan (JPS), Japanese - Spin-wave Brillouin scattering in epitaxial MnAs thin films
Hyomi K.; Murayama A.; Sakuma M.; Oka Y.; Okabayashi J.; Mizuguchi M.; Kuramochi H.; Akinaga H., Meeting abstracts of the Physical Society of Japan, 59, 1, 666, 666, 03 Mar. 2004
The Physical Society of Japan (JPS), Japanese - 27aYA-2 Magnetization-induced second harmonic generation in (Ga,Mn)As
Ogawa Y.; Akinaga H.; Takano F.; Arima T.; Tokura Y., Meeting abstracts of the Physical Society of Japan, 59, 1, 665, 665, 03 Mar. 2004
The Physical Society of Japan (JPS), Japanese - 28aXQ-7 Core-level magnetic circular dichroism of MnAs-based nanostructures
Okabayashi J.; Mizuguchi M.; Ono K.; Oshima M.; Akinaga H.; Yuri M.; Chen C.T., Meeting abstracts of the Physical Society of Japan, 59, 1, 732, 732, 03 Mar. 2004
The Physical Society of Japan (JPS), Japanese - Zincblende-type Spin-electronics Materials : Thin Film Growth and Physical Properties
AKINAGA Hiro, 日本応用磁気学会研究会資料, 134, 29, 36, 29 Jan. 2004
Japanese - CNT探針を用いた高分解能MFM観察
倉持宏実; 渦巻拓也; 安武正敏; 田中厚志; 秋永広幸; 横山浩, 応用物理学会学術講演会講演予稿集, 65th, 1, 2004 - Room-temperature magnetoresistive switch effect observed in Au/GaAs superstructures
MIZUGUCHI Masaki; SUN Zhigang; MANAGO Takashi; AKINAGA Hiro, 日本応用磁気学会学術講演概要集 = Digest of ... annual conference on magnetics in Japan, 27, 262, 262, 01 Sep. 2003
Japanese - Time-Spatial Resolved Spectroscopy of Two-Dimensional Electron System in Modulation-Doped (Cd, Mn)Te/(Cd, Mg)Te SQW under Magnetic and Electric Fields
Takano F.; Tokizaki T.; Akinaga H.; Kuroda S.; Takita K., Meeting abstracts of the Physical Society of Japan, 58, 2, 576, 576, 15 Aug. 2003
The Physical Society of Japan (JPS), Japanese - Time-Spatial Resolved Spectroscopy of Two-Dimensional Electron System in Modulation-Doped Cd_<1-x>Mn_xTe/Cd_<1-y>Mg_yTe SQW under Magnetic Fields II
Takano F.; Tokizaki T.; Akinaga H.; Kuroda S.; Takita K., Meeting abstracts of the Physical Society of Japan, 58, 1, 665, 665, 06 Mar. 2003
The Physical Society of Japan (JPS), Japanese - Pseudogap and electronic structure of itinerant antiferromagnet MnPt
Ono K.; Taniuchi T.; Okabayashi J.; Oshima M.; Umetsu R.; Fukamichi K.; Sakuma A.; Okimoto Y.; Akinaga H., Meeting abstracts of the Physical Society of Japan, 58, 1, 697, 697, 06 Mar. 2003
The Physical Society of Japan (JPS), Japanese - Magnetic Domain Imaging of Nanoscale Magnetic Structures Using Synchrotron Radiation Photoelectron Emission Microscopy
ONO K.; OSHIMA M.; AKINAGA H.; BAUER E., Journal of Magnetics Society of Japan, 26, 12, 1168, 1173, 01 Dec. 2002
We have investigated the magnetic domain structure of nanoscale magnets by synchrotron radiation photo-electron emission microscopy (SR-PEEM). Closure domains of the nanoscale magnets and the chirality of the nanoscale disks were clearly observed. In this article,we have shown the overview,mechanism,and the application of the SR-PEEM., 日本応用磁気学会, Japanese - Magnetic imaging of flux closure structures using synchrotron radiation photoelectron emission microscopy
ONO K.; OSHIMA M.; AKINAGA H.; BAUER E., 日本応用磁気学会学術講演概要集 = Digest of ... annual conference on magnetics in Japan, 26, 51, 51, 01 Sep. 2002
Japanese - Growth and magnetic properties of half-metallic ferromagnet "zinc-blende CrAs thin film"
MIZUGUCHI M; AKINAGA H; MANAGO T; ONO K; OSHIMA M; SHIRAI M, 日本応用磁気学会学術講演概要集 = Digest of ... annual conference on magnetics in Japan, 26, 26, 26, 01 Sep. 2002
Japanese - Time-Spatial Resolved Spectroscopy of Two-Dimensional Electron System in Modulation-Doped Cd1-xMnx Te/Cd1-yMgyTe SQW under Magnetic Fields
Takano F.; Tokizaki T.; Akinaga H.; Kuroda S.; Takita K., Meeting abstracts of the Physical Society of Japan, 57, 2, 585, 585, 13 Aug. 2002
The Physical Society of Japan (JPS), Japanese - Spin-polarized electron injection from ferromagnet to semiconductor-How to make it efficient?
Akinaga H; Manago T; Mizuguchi M; Shirai M.; Tarucha S.; Honda M.; Sato T., Meeting abstracts of the Physical Society of Japan, 57, 2, 576, 576, 13 Aug. 2002
The Physical Society of Japan (JPS), Japanese - Magnetic imaging of flux closure structures using synchrotron radiation photoelectron emission microscopy
Ono K.; Oshima M.; Akinaga H.; Bauer E., Meeting abstracts of the Physical Society of Japan, 57, 2, 337, 337, 13 Aug. 2002
The Physical Society of Japan (JPS), Japanese - Nanoelectronic devices with reactively fabricated semiconductor
J Kim; H Akinaga; N Atoda; J Tominaga, APPLIED PHYSICS LETTERS, 80, 15, 2764, 2766, Apr. 2002
English - 25pXJ-5 Spin injection on ferromagnetic metal/semiconductor MIS structures
Masago T.; Akinaga H., Meeting abstracts of the Physical Society of Japan, 57, 1, 427, 427, 01 Mar. 2002
The Physical Society of Japan (JPS), Japanese - Semiconductor spintronics
H Akinaga; H Ohno, IEEE TRANSACTIONS ON NANOTECHNOLOGY, 1, 1, 19, 31, Mar. 2002
English, Book review - 蛍光法XAFS法によるFePtナノ粒子薄膜の局所構造評価と磁気的特性
大淵博宣; 井原宣孝; 渦巻拓也; 田中厚志; 秋永広幸; 竹田美和, 応用物理学会学術講演会講演予稿集, 63rd, 1, 2002 - 蛍光XAFS法によるFePtナノ粒子薄膜の局所構造評価と磁気的特性
大淵博宣; 井原宣孝; 渦巻拓也; 田中厚志; 秋永広幸; 竹田美和, 応用物理学会学術講演会講演予稿集, 63rd, 3, 2002 - 完全スピン偏極強磁性体の物質設計と合成
秋永広幸; 水口将輝; 眞砂卓史; 小野寛太; 尾嶋正治; 白井正文, 日本応用磁気学会誌, 26, 67, 72, 2002
Japanese, Introduction other - Magnetoresistive Switch Effect in Metal / Semiconductor Hybrid Granular Films
AKINAGA H., 日本応用磁気学会研究会資料, 121, 41, 46, 23 Oct. 2001
Japanese - Material Design and Growth of "Zinc-Blende CrAs"
MIZUGUCHI Masaki; AKINAGA Hiro; MANAGO Takashi; ONO Kanta; OSHIMA Masaharu; SHIRAI Masafumi, Extended abstracts of the ... Conference on Solid State Devices and Materials, 2001, 130, 131, 25 Sep. 2001
English - Fabrication and in situ photoemission spectroscopy of zinc-blende type MnAs nanoscale dots
Okabayashi J.; Ono K.; Mizuguchi M.; Fujimori A.; Oshima M.; Akinaga H., Meeting abstracts of the Physical Society of Japan, 56, 2, 523, 523, 03 Sep. 2001
The Physical Society of Japan (JPS), Japanese - Spin-valve effect in the Co/Al_2O_3/Fe structure grown on GaAs substrate
Honda M.; Sato T.; Manago T.; Akinaga H.; Ono K.; Tarucha S., Meeting abstracts of the Physical Society of Japan, 56, 2, 356, 356, 03 Sep. 2001
The Physical Society of Japan (JPS), Japanese - Growth and magnetic properties of ferromagnetic semiconductor, (Ga, Cr)As
YAMADA M.; ONO K.; MANO T.; MIZUGUCHI M.; OKABAYASHI J.; AKINAGA H.; OSHIMA M., 日本応用磁気学会学術講演概要集 = Digest of ... annual conference on magnetics in Japan, 25, 268, 268, 01 Sep. 2001
Japanese - New half-metallic CrAs: material-design, synthesis and device-application
MANAGO T; MIZUGUCHI M; AKINAGA H; SHIRAI M; ONO K; OSHIMA M, 日本応用磁気学会学術講演概要集 = Digest of ... annual conference on magnetics in Japan, 25, 111a, 111b, 01 Sep. 2001
Japanese - Growth and physical properties of multi-layers composed of zinc-blende CrAs
MIZUGUCHI M; AKINAGA H; MANAGO T; ONO K; OSHIMA M; SHIRAI M, 日本応用磁気学会学術講演概要集 = Digest of ... annual conference on magnetics in Japan, 25, 267, 267, 01 Sep. 2001
Japanese - Fluorescence x-ray absorption fine structure study on local structures around Fe atoms heavily doped in GaN by low-temperature molecular-beam epitaxy
H Ofuchi; M Oshima; M Tabuchi; Y Takeda; H Akinaga; S Nemeth; J De Boeck; G Borghs, APPLIED PHYSICS LETTERS, 78, 17, 2470, 2472, Apr. 2001
English - Spin dependent transport of ferromagnetic metal/Al_2O_3/GaAs MIS structures
Manago T.; Akinaga H.; Suzuki Y.; Yuasa S.; Tamura E., Meeting abstracts of the Physical Society of Japan, 56, 1, 358, 358, 09 Mar. 2001
The Physical Society of Japan (JPS), Japanese - Photoemission study of the zinc-blende type CrAs
Mizuguchi M; Ono K; Akinaga H; Manago T; Yeom H. W; Chung Y. D; Okabayashi J; Mano T; Shirai M; Oshima M, Meeting abstracts of the Physical Society of Japan, 56, 1, 608, 608, 09 Mar. 2001
The Physical Society of Japan (JPS), Japanese - GaAs/MnSbグラニュラー構造における磁気抵抗スイッチ効果
秋永広幸; 水口将輝; 小野寛太; 尾嶋正治, 応用物理, 70, 3, 313, 316, 2001
応用物理学会, Japanese, Introduction other - 新完全スピン偏極強磁性体ー閃亜鉛鉱型CrAs
秋永広幸; 水口将輝; 眞砂卓史; 小野寛太; 尾嶋正治; 白井正文, 固体物理, 36, 9, 587, 592, 2001
アグネ技術センタ-, Japanese, Introduction other - 金属 / 半導体ハイブリッド超薄膜で出現した超巨大磁気抵抗効果ー磁気抵抗スイッチ効果ー
秋永広幸; 水口将輝, 化学と工業, 54, 814, 816, 2001
Japanese, Introduction other - Spin dependent transport of ferromagnetic metal/Al_2O_3/GaAs MIS structures
Manago T.; Akinaga H.; Suzuki Y.; Tamura E.; Yuasa S., Meeting abstracts of the Physical Society of Japan, 55, 2, 378, 378, 10 Sep. 2000
The Physical Society of Japan (JPS), Japanese - Room-temperature photo-induced MR in MnSb: GaAs granular thin films
MIZUGUCHI M.; AKINAGA H.; ONO K.; OSHIMA M., 日本応用磁気学会学術講演概要集 = Digest of ... annual conference on magnetics in Japan, 24, 373, 373, 01 Sep. 2000
Japanese - Spin-relaxation at surfaces and interfaces of GaAs
Manago T.; Akinaga H.; Suzuki Y.; Tamura E.; Yuasa S., Meeting abstracts of the Physical Society of Japan, 55, 1, 358, 358, 10 Mar. 2000
The Physical Society of Japan (JPS), Japanese - 半導体表面への磁性ナノ構造の成長と物性
尾嶋正治; 小野寛太; 水口将輝; 藤岡洋; 田中雅明; 秋永広幸, 日本応用磁気学会誌, 24, 67, 73, 2000
Japanese, Introduction other - Formaton of MnSb granular films and their properties
MIZUGUCHI M.; AKINAGA H.; ONO K.; OSHIMA M., 日本応用磁気学会学術講演概要集 = Digest of ... annual conference on magnetics in Japan, 23, 128, 128, 01 Oct. 1999
Japanese - Room-temp. extra-huge magnetoresistance effect in MnSb granular films
AKINAGA H.; MIZUGUCHI M.; ONO K.; OSHIMA M., 日本応用磁気学会学術講演概要集 = Digest of ... annual conference on magnetics in Japan, 23, 58, 58, 01 Oct. 1999
Japanese - 26pPSA-54 Epitaxial growth of MnSb thin films on(111)B GaAs and their magnetic properties
Miyanishi S; Manago T; Mizuguchi M; Akinaga H; Tamura E; Tanaka K, Meeting abstracts of the Physical Society of Japan, 54, 2, 422, 422, 03 Sep. 1999
The Physical Society of Japan (JPS), Japanese - 29a-ZH-3 Photoemission study of MnAs nanodots on GaAs substrates
Ono K.; Mizuguchi M.; Uragami T.; Tanaka M.; Watanabe Y.; Akinaga H.; Fujioka H.; Oshima M., Meeting abstracts of the Physical Society of Japan, 54, 1, 197, 197, 15 Mar. 1999
The Physical Society of Japan (JPS), Japanese - 28a-YN-3 Epitaxial MnGa/Mn_2Sb/MnGa trilayers grown on GaAs(001) by molecular beam epitaxy
ROY W.Van; AKINAGA H.; MIYANISHI S., Meeting abstracts of the Physical Society of Japan, 53, 2, 197, 197, 05 Sep. 1998
The Physical Society of Japan (JPS), English - Magnetic resistance effect of epitaxial Mn_2(Sb,As) thin films
MIYANISHI S.; AKINAGA H.; ROY W.Van; TANAKA K., Meeting abstracts of the Physical Society of Japan, 53, 2, 508, 508, 05 Sep. 1998
The Physical Society of Japan (JPS), Japanese - Negative magnetoresistance in MnAs:GaAs granular films
AKINAGA H.; DE BOECK J.; MIYANISHI S.; VAN ROY W.; BORGHS G., Meeting abstracts of the Physical Society of Japan, 53, 2, 550, 550, 05 Sep. 1998
The Physical Society of Japan (JPS), Japanese - Magnetic resistance effect of epitaxial Mn_2(Sb,As) thin films
MIYANISHI S.; AKINAGA H.; ROY Willem Van; TANAKA K., Meeting abstracts of the Physical Society of Japan, 53, 1, 477, 477, 10 Mar. 1998
The Physical Society of Japan (JPS), Japanese - 8a-E-10 Photoluminescence of (Ga, Mn)As
Matsue K.; Itoh H.; Nishimura T.; Koshihara S.; Minami F.; Van Roy W.; Miyanishi S.; Akinaga H., Meeting abstracts of the Physical Society of Japan, 52, 2, 185, 185, 16 Sep. 1997
The Physical Society of Japan (JPS), Japanese - 8p-YG-8 Fabrication of Mn_2(Sb, As)thin films by moleculer-beam epitaxy and their magnetic properties
Miyanishi S.; Akinaga H.; W. Van Roy; Tanaka K., Meeting abstracts of the Physical Society of Japan, 52, 2, 553, 553, 16 Sep. 1997
The Physical Society of Japan (JPS), Japanese - 30p-W-14 Fabrication of Mn2Sb thin films by moleculer-beam epitaxy and their magnetic properties
Miyanishi S.; Akinaga H.; Roy W.van; Tanaka K., Meeting abstracts of the Physical Society of Japan, 52, 1, 498, 498, 17 Mar. 1997
The Physical Society of Japan (JPS), Japanese - Fabrication of Mn-Sb thin films grown on GaAs and their surface structure dependence of growth mode
Miyanishi S.; Akinaga H.; Roy W.Van; Tanaka K., Abstracts of the meeting of the Physical Society of Japan. Sectional meeting, 1996, 3, 68, 68, 13 Sep. 1996
The Physical Society of Japan (JPS), Japanese - 1p-YE-5 Spin-and angle-resolved photoemission study of itinerant ferramagnets: MnAs and MnSb
Shimada K.; Kimura A.; Rader O.; Kamakura N.; Ono K.; Sendoha T.; Fujimori A.; Kakizaki A.; Miyanishi S.; Akinaga H.; Akeura K.; Tanaka M.; Shirai M., Abstracts of the meeting of the Physical Society of Japan. Annual meeting, 51, 3, 132, 132, 15 Mar. 1996
The Physical Society of Japan (JPS), Japanese - 3P-YD-3 Magnetization Process of Cobalt Dots Formed on Reconstructed Au(111) Surface
Takeshita H.; Suzuki Y.; Akinaga H.; Mizutani W.; Katayama T., Abstracts of the meeting of the Physical Society of Japan. Annual meeting, 51, 3, 235, 235, 15 Mar. 1996
The Physical Society of Japan (JPS), Japanese - 3P-YD-9 TEM and magneto-optical studies of MnSb/GaAs heterointerfaces
Miyanishi S.; Akinaga H.; Van Roy Willem; Kuo L. H.; Katayama T.; Tanaka K., Abstracts of the meeting of the Physical Society of Japan. Annual meeting, 51, 3, 238, 238, 15 Mar. 1996
The Physical Society of Japan (JPS), Japanese - Substrate dependense of fabrication and Magneto-optical Properties of MnSb Thin Film
Miyanishi S.; Akinaga H.; Ando K.; Katayama T.; Suzuki Y.; Tanaka K., Abstracts of the meeting of the Physical Society of Japan. Sectional meeting, 1995, 3, 120, 120, 12 Sep. 1995
The Physical Society of Japan (JPS), Japanese - Magneto-optical Properties of MnSb Ultra Thin Films Grown on GaAs
Akinaga H.; Miyanishi S.; Takeshita H.; Suzuki Y.; Katayama T., Abstracts of the meeting of the Physical Society of Japan. Sectional meeting, 1995, 3, 122, 122, 12 Sep. 1995
The Physical Society of Japan (JPS), Japanese - Ultra-thin MnSb Films grown on GaAs by MBE
AKINAGA H.; MIYANISHI S.; TAKESHITA H.; SUZUKI Y.; KATAYAMA T., 日本応用磁気学会学術講演概要集 = Digest of ... annual conference on magnetics in Japan, 19, 518, 518, 01 Sep. 1995
Japanese - Initial Growth Process and Magneto-Optical Effect of Co on Au(111) Surface
Takeshita H.; Suzuki Y.; Akinaga H.; Mizutani W.; Chappert C.; Katayama T., Abstracts of the meeting of the Physical Society of Japan. Annual meeting, 50, 3, 58, 58, 16 Mar. 1995
The Physical Society of Japan (JPS), Japanese - Fabrication of MnSb Thin Film and its Magneto-optical Properties
Miyanishi S.; Akinaga H.; Ando K.; Katayama T.; Suzuki Y.; Tanaka K., Abstracts of the meeting of the Physical Society of Japan. Annual meeting, 50, 3, 61, 61, 16 Mar. 1995
The Physical Society of Japan (JPS), Japanese - 5p-F-11 Fabrication and Magneto-optical Study of MnTe:Sb Thin Film
Akinaga H; Miyanishi S; Miyanishi S; Katayama T; Tanaka K, Abstracts of the meeting of the Physical Society of Japan. Sectional meeting, 1994, 2, 165, 165, 16 Aug. 1994
The Physical Society of Japan (JPS), Japanese - 28a-YQ-11 Surface Structure of the first few Monolayers of Fe deposited at Room Temperature on GaAs (100) Substrates
Ehinger M.K; Akinaga H; Ando K; Tanaka K, Abstracts of the meeting of the Physical Society of Japan. Annual meeting, 49, 3, 17, 17, 16 Mar. 1994
The Physical Society of Japan (JPS), Japanese - 28a-K-3 Growth and magneto-optical properties of Zn-Cr-Te films
Ando K; Akinaga H, Abstracts of the meeting of the Physical Society of Japan. Annual meeting, 49, 2, 120, 120, 16 Mar. 1994
The Physical Society of Japan (JPS), Japanese - 14a-DE-9 Time-resolved Photoluminescence Study of CdTe/Cd_<1-x>Mn_xTe Multiple Quantum Wells
Akinaga H.; Takeuchi Y.; Ando K.; Tanaka K., Abstracts of the meeting of the Physical Society of Japan. Sectional meeting, 1993, 2, 197, 197, 20 Sep. 1993
The Physical Society of Japan (JPS), Japanese - CONTROL OF THE CRYSTAL ORIENTATION OF ZINCBLENDE MNTE EPITAXIAL-FILMS GROWN ON GAAS
H AKINAGA; K ANDO; T ABE; S YOSHIDA, JOURNAL OF APPLIED PHYSICS, 74, 1, 746, 748, Jul. 1993
English, Introduction scientific journal - HIGH-FIELD MAGNETOABSORPTION STUDY OF HETEROINTERFACE EFFECTS IN CDTE/CD0.6MN0.4TE MULTIPLE-QUANTUM WELLS
H AKINAGA; T ABE; K ANDO; S YOSHIDA; K UCHIDA; S SASAKI; N MIURA, PHYSICAL REVIEW B, 47, 23, 15954, 15957, Jun. 1993
English, Introduction scientific journal - 30a-N-13 Magneto-Absorption Spectra of CdTe/Cd_<1-x>Mn_xTe Multiple Quantum Wells
Akinaga H.; Abe T.; Takeuchi Y.; Ando K.; Yoshida S.; Uchida K.; Sasaki S.; Miura N., Meeting Abstracts of the Physical Society of Japan, 48, 0, 149, 149, 1993
The Physical Society of Japan, Japanese - High-field magneto-optical study of localized excitons in CdTe/Cd1-xMnxTe multiple quantum wells
H. Akinaga; Y. Shirai; S. Kuroda; K. Takita; S. Sasaki; N. Miura, Physica B: Physics of Condensed Matter, 184, 1-4, 460, 464, 1993
English - 26a-M-11 Optical Properties of Cd_<1-x>Mn_xTe/Cd_<1-y>Mn_yTe Superlattices grown by MBE
Kuroda S.; Shirai Y.; Akinaga H.; Takita K., 春の分科会講演予稿集, 1991, 2, 162, 162, 11 Mar. 1991
The Physical Society of Japan (JPS), Japanese - 3a-F-16 Excitonic Magnetic Polarons of MBE-grown Cd_<1-x>Mn_xTe in High Magnetic Field
Akinaga mH; Shirai Y; Kuroda S; Takeyama S; Miura N; Takita K, 秋の分科会講演予稿集, 1990, 2, 141, 141, 12 Sep. 1990
The Physical Society of Japan (JPS), Japanese - Low Temperature Elastic Properties of Nd1 + xBa2 – xCu3O7 – δ
H. Mizubayashi; H. Akinaga; K. Takita, physica status solidi (a), 117, 1, 125, 134, 1990
English - 31p-PS-50 Superconducting Properties and Structure of Nd_<1-x>Ba_<2-x>Cu_3O_<7-δ> annealed in High-Pressure Oxigen
TAKITA Koki; AKINAGA Hiroyuki; MOCHIKU Takasi; TAKEDA Yasuo; TAKANO Mikio; ASANO Hajime, 年会講演予稿集, 44, 3, 271, 271, 28 Mar. 1989
The Physical Society of Japan (JPS), Japanese
- Development of Si-based Spintronic Devices
Grants-in-Aid for Scientific Research
2007 - 2010
AKINAGA Hiroyuki; SUEMASU Takashi
To promote integration of 'spintronics' and 'the silicon technology', we are focusing on the actualization of a highly effective spin-injection in the silicon-based device with the aims of "Development of silicon-based ferromagnets", "Demonstration of the spin-injection in ferromagnetic metal / silicon heterostructures". We have succeeded in showing that γ'-Fe4N possesses the high spin polarization (0.59) and the large magnetic moment (2.45μB/Fe). The successful operation of epitaxial CaF_2/Fe_3Si/CaF_2 ferromagnetic resonant tunneling diode was also demonstrated.
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research on Priority Areas, National Institute of Advanced Industrial Science and Technology, 19048030 - Coordination of the research on spin current and nano-hetero structures
Grants-in-Aid for Scientific Research
2007 - 2010
OTANI Yoshichika; NITTA Junsaku; AKINAGA Hiroyuki; INOUE Junichiro
Supporting systems were established for promoting collaboration among 4 independent research projects ; 1. "Establishing novel methods for spin current generation and manipulation using metallic nano-structures", 2. "Electrical detection and control of spin current by using spin orbit interaction in semiconductors", 3. "Optimization of spin injection efficiency in silicon based spintronic devices", "Theory of spin injection and accumulation in nano-hetero structures". To be more precise, we have organized 1) a shared data server, 2) a video conference system, 3) periodical meetings to exchange domestic and international research information and also support for travel to attend international conferences. By using above supporting systems, we successfully obtained demonstrative results on the intrinsic origin of spin Hall effects via collaboration between theoretical and experimental groups. Moreover the discussion at the international conferences promoted successful research collaboration of French and Japanese groups for the study of the extrinsic mechanism of the spin Hall effects, leading to an important achievement.
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research on Priority Areas, The University of Tokyo, 19048014 - 完全スピン偏極強磁性体薄膜の作製と評価及びそのスピントロニクス素子への応用
科学研究費助成事業
2005 - 2007
秋永 広幸; WANG Wenhong
本研究では,完全スピン偏極強磁性体薄膜及の特性評価を行い,その薄膜を用いてスピン依存磁気輸送現象を示す素子構造を開発することを最終目標とした.着任後1年間は,その目標に向けて,薄膜作製と磁気輸送現象測定を行った.平成18年度は,更にその研究をIV族半導体ベースの材料に展開し,当該分野の先駆けとなる成果を得られつつある.具体的には,シリコンカーバイド(SiC)に磁性元素であるMnを導入した物質を合成し,その磁気特性の評価を行った.本成果は,The 10th Joint MMM/Intermag Conference(2007/1/7-11,Baltimore, Maryland, USA)において発表し,SiC基板上にMn薄膜を形成することによってその界面に生成される強磁性体の同定と特性評価を行った成果は,The International Materials Week(2006/6/24-30,Beijing, China), The 13th International Conference on X-ray Absorption Fine Structure(2006/7/9-14,Stanford, CA USA),The International Conference on Magnetism(2006/10/20-25,Kyoto, Japan),及び,The 3rd Asian Forum on Magnetics(2006/9/11-14,Matsue, Japan)で発表した.またSiC基板上に良質なエピタキシャルMn薄膜を成長できることを明らかにした.本成果は,The 14th International Conference on Molecular Beam Epitaxy(2006/9/3-8,Tokyo)において発表した.
日本学術振興会, 特別研究員奨励費, 独立行政法人産業技術総合研究所, 05F05611 - Spintoronics Devices using Transport Properties
Grants-in-Aid for Scientific Research
2002 - 2005
AKINAGA Hiroyuki
Magnetoresistive switch effect observed in a semiconductor / metal hybrid structure is considered to be an effect in which its non-linear current-voltage characteristics recover to the linearity under the magnetic field. In order to elucidate the origin, from FY2002 to FY2003, we investigated the necessary structural conditions for the magnetoresistive switch effect, and succeeded in observing the effect in a Au gap structure fabricated on a GaAs substrate. In FY2004, we found the electro-luminescence phenomena in the Au gap structure. Furthermore, the space-resolved electro-luminescence measurements showed that the non-linear transport was thought to progress not on the GaAs surface between the Au electrodes, but at the heterointerface between GaAs and Au. This result indicates the advantage in terms of the device application using this effect, because the interface is much stable and easiertrrbe-liandled comparing to the surface. In the last half period of FY2005, we intensively investigated the relationship between the interface and the magnetoresistive switch effect, then finally, we achieved the conclusion that the sample with the structurally disordered heterointerface shows the non-linear transport, but not the magnetic field dependence. Namely, the experimental results proved that the metal / semiconductor interface is the arena where the magnetoresistive switch effect takes place.
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research on Priority Areas, National Institute of Advanced Industrial Science and Technology, 14076219 - 電子スピントロニクスデバイス研究調整班
科学研究費助成事業
2002 - 2005
田中 雅明; 山田 省二; 猪俣 浩一郎; 秋永 広幸
平成17度には、前年に引き続きこれまでに開発したさまざまなスピントロニクス材料を用いて、スピンの生成、トンネル効果による輸送、注入に関する研究を行い、機能としては記憶と計測(+論理演算)を行う下記デバイスの調査研究、分析と研究開発を行った。8月に行われた国際会議(Spintech III)に関連して第1線で活躍中の外国人研究者を招聘し、研究討論を行った。次の項目に関し成果のとりまとめを行った。1月末に年度末成果報告会および公開シンポジウムを開催した。
(1)強磁性トンネル接合デバイス
・半導体と整合性のよいフルエピタキシャル強磁性トンネル接合の作製とTMRデバイス(田中)
・スイッチイング機能付きMRAM素子(猪俣、田中)
・共鳴トンネル型TMRデバイス(田中、山田)
(2)磁性グラニュラー構造デバイス
・磁気抵抗スイッチ効果の解明と高感度磁気センサへの応用(秋永)
・半導体/強磁性金属グラニュラー構造の作製と磁気輸送特性の解明(田中)
(3)スピンFETおよびスピンMOSFETの試作と動作原理の実証
・半導体チャネル中へのスピン注入と伝導、スピンの検出(山田、田中)
日本学術振興会, 特定領域研究, 東京大学, 14076101
- 気体センサ
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特願2017-016307, 31 Jan. 2017
特開2018-124170, 09 Aug. 2018
201803004645121989 - 抵抗変化素子
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特願2013-241741, 22 Nov. 2013
特開2015-103601, 04 Jun. 2015
特許第6319553号
13 Apr. 2018
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Patent right, 蜂谷 智央; 秋永 広幸; 秦 信宏, 国立研究開発法人産業技術総合研究所
特願2014-061923, 25 Mar. 2014
特開2015-185747, 22 Oct. 2015
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特願2011-248759, 14 Nov. 2011
特開2013-104102, 30 May 2013
特許第5807909号
18 Sep. 2015
201503001686648133 - Cu2O膜をp−型の半導体層として具備する半導体素子の構造とその作製方法
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特願2013-216597, 17 Oct. 2013
特開2015-079881, 23 Apr. 2015
201503017384952588 - スイッチング素子及びその製造方法
Patent right, 島 久; 秋永 広幸; 高野 史好; 玉井 幸夫, 独立行政法人産業技術総合研究所, シャープ株式会社
特願2006-203025, 26 Jul. 2006
特開2008-034434, 14 Feb. 2008
特許第5263856号
10 May 2013
201303019152765950 - 半導体装置及びその製造方法
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特願2011-225006, 12 Oct. 2011
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201303020243355531 - 整流素子及びその製造方法
Patent right, 島 久; 秋永 広幸; 石橋 章司; 田村 友幸, 独立行政法人産業技術総合研究所
特願2008-275222, 27 Oct. 2008
特開2009-135461, 18 Jun. 2009
特許第5229892号
29 Mar. 2013
201303061927026519 - 可変抵抗素子
Patent right, 玉井 幸夫; 細井 康成; 粟屋 信義; 大西 茂夫; 石原 数也; 島 久; 高野 史好; 秋永 広幸, シャープ株式会社, 独立行政法人産業技術総合研究所
特願2009-296280, 25 Dec. 2009
特開2010-103555, 06 May 2010
特許第5120967号
02 Nov. 2012
201303089644506850 - 微小電極およびその製造方法
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特願2007-555886, 15 Jan. 2007
WO2007-086268, 02 Aug. 2007
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11 May 2012
201303085500905100 - 可変抵抗素子とその製造方法及び不揮発性半導体記憶装置
Patent right, 玉井 幸夫; 細井 康成; 粟屋 信義; 大西 茂夫; 石原 数也; 島 久; 高野 史好; 秋永 広幸, シャープ株式会社, 独立行政法人産業技術総合研究所
特願2007-292763, 12 Nov. 2007
特開2008-306157, 18 Dec. 2008
特許第4967176号
13 Apr. 2012
201303074662889166 - スイッチング素子
Patent right, 井上 公; 秋永 広幸; 保田 周一郎; 高木 英典, 独立行政法人産業技術総合研究所
特願2005-235131, 15 Aug. 2005
特開2007-053125, 01 Mar. 2007
特許第4854233号
04 Nov. 2011
201303088990016464 - 多溝性表面を有するシリコン基板の製造方法
Patent right, 秋永 広幸; サン ツィガング, 独立行政法人産業技術総合研究所
特願2007-110451, 19 Apr. 2007
特開2007-300094, 15 Nov. 2007
特許第4811736号
02 Sep. 2011
201303020490149960 - 電子雪崩効果による抵抗変化を磁場によって制御した素子及びそれを用いた磁気感応装置
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特願2002-055364, 01 Mar. 2002
特開2003-258268, 12 Sep. 2003
特許第4543142号
09 Jul. 2010
201103069288741518 - 磁気抵抗効果薄膜
Patent right, 秋永 広幸; 尾嶋 正治; 水口 将輝, 独立行政法人産業技術総合研究所, 秋永 広幸
特願平11-204443, 19 Jul. 1999
特開2000-340425, 08 Dec. 2000
特許第4496320号
23 Apr. 2010
201103023671758599 - 走査型磁気力顕微鏡用探針およびその製造方法並びにカーボンナノチューブ用強磁性合金成膜方法
Patent right, 秋永 広幸; 仙波 靖之; 横山 浩; 安武 正敏; 倉持 宏実, 独立行政法人産業技術総合研究所, エスアイアイ・ナノテクノロジー株式会社
特願2009-223588, 29 Sep. 2009
特開2010-014728, 21 Jan. 2010
特許第4452827号
12 Feb. 2010
201003070285807730 - 環状単磁区構造微小磁性体およびその製造方法又はそれを用いた磁気記録素子
Patent right, 秋永 広幸; 小野 寛太; 尾嶋 正治; 谷内 敏之, 独立行政法人産業技術総合研究所
特願2003-160325, 05 Jun. 2003
特開2004-363350, 24 Dec. 2004
特許第4403264号
13 Nov. 2009
201103027915884600 - 可変抵抗素子、可変抵抗素子の製造方法、不揮発性半導体記憶装置
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特願2007-317733, 07 Dec. 2007
特開2009-141225, 25 Jun. 2009
200903035850737669 - 消去又は書換え可能な記録媒体並びにその記録媒体に対する消去又は書換え可能な記録方法
Patent right, 時崎 高志; 秋永 広幸; 横山 浩; 眞砂 卓史; 倉持 宏実; 安武 正敏, 独立行政法人産業技術総合研究所
特願2003-044876, 21 Feb. 2003
特開2004-253095, 09 Sep. 2004
特許第4174571号
29 Aug. 2008
201103098643472272 - スピンバルブトランジスタ
Patent right, 佐藤 俊彦; 秋永 広幸; 本田 元就; 樽茶 清悟; 大野 圭司; 横山 浩, 独立行政法人科学技術振興機構, 独立行政法人産業技術総合研究所
特願2001-382827, 17 Dec. 2001
特開2003-188390, 04 Jul. 2003
特許第4162888号
01 Aug. 2008
201103083357467680 - 走査型プローブ顕微鏡
Patent right, 安武 正敏; 秋永 広幸; 横山 浩, エスアイアイ・ナノテクノロジー株式会社, 独立行政法人産業技術総合研究所
特願2002-366408, 18 Dec. 2002
特開2003-254887, 10 Sep. 2003
特許第4096303号
21 Mar. 2008
201103080259548877 - 多溝性表面を有するシリコン基板及びその製造方法
Patent right, 秋永 広幸; サン ツィガング, 独立行政法人産業技術総合研究所
特願2004-075583, 17 Mar. 2004
特開2005-268357, 29 Sep. 2005
特許第3994166号
10 Aug. 2007
201103003665691848 - パターンドメディアおよびその製造方法
Patent right, 時崎 高志; 秋永 広幸; 横山 浩; 眞砂 卓史; 倉持 宏実; 安武 正敏, 独立行政法人産業技術総合研究所, エスアイアイ・ナノテクノロジー株式会社
特願2002-271323, 18 Sep. 2002
特開2004-110926, 08 Apr. 2004
特許第3915909号
16 Feb. 2007
201103041747414558 - スピン注入源デバイス及びその製造方法
Patent right, 末益 崇; 秋永 広幸, 末益 崇, 独立行政法人産業技術総合研究所
特願2005-081862, 22 Mar. 2005
特開2006-269510, 05 Oct. 2006
200903068313583499 - 多重極限プロービングシステム
Patent right, 秋永 広幸; 逸見 智和; 小山 友康; 堀之内 秀有; 山内 睦子, 独立行政法人産業技術総合研究所, 有限会社サーマルブロック, 日本オートマティック・コントロール株式会社, 有限会社エレクトロラボ, 有限会社アルアーラム
特願2003-129685, 08 May 2003
特開2004-045383, 12 Feb. 2004
特許第3851933号
15 Sep. 2006
201103078770760537 - 反応性イオンエッチング方法および反応性イオンエッチング装置
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特願2004-075506, 17 Mar. 2004
特開2005-268349, 29 Sep. 2005
200903022619128647 - スピンエレクトロニクス材料およびその作製方法
Patent right, 秋永 広幸; 白井 正文; 眞砂 卓史, 独立行政法人産業技術総合研究所, 秋永 広幸
特願2000-273364, 08 Sep. 2000
特開2002-080299, 19 Mar. 2002
特許第3537086号
26 Mar. 2004
201103027428819429 - 磁気抵抗効果素子およびそれを用いた磁気感応装置
Patent right, 秋永 広幸; 尾嶋 正治; 水口 将輝, 独立行政法人産業技術総合研究所
特願2000-360215, 27 Nov. 2000
特開2002-164589, 07 Jun. 2002
特許第3472783号
19 Sep. 2003
201103058667819018 - 閃亜鉛鉱型MnAsドットの作製法
Patent right, 尾嶋 正治; 小野 寛太; 秋永 広幸, 株式会社 先端科学技術インキュベーションセンター, 独立行政法人産業技術総合研究所
特願2001-272888, 10 Sep. 2001
特開2003-086785, 20 Mar. 2003
200903056751884614 - 磁気記録媒体
Patent right, 秋永 広幸; ビレム; ファン ロイ, 独立行政法人産業技術総合研究所
特願平9-035174, 19 Feb. 1997
特開平10-233313, 02 Sep. 1998
特許第3278655号
22 Feb. 2002
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