平田秋彦 (Akihiko Hirata) - マイポータル

基本情報

所属: 早稲田大学理工学術院教授
: 東北大学連携教授
: 産総研-東北大MathAM-OIL チーフリサーチャー

学位: 博士（工学）(早稲田大学)

研究者番号: 90350488
J-GLOBAL ID: 200901095050706574
researchmap会員ID: 5000076419

研究キーワード

研究分野

ナノテク・材料 / 金属材料物性 /

受賞

2006年

Best Poster Young Researcher Presentation Award in BMGV

論文

140

Quantum beam diffraction measurement and topological analysis of tetrahedrally coordinated non-crystalline materials

Shinji Kohara, Koji Kimura, Motoki Shiga, Yohei Onodera, Akihiko Hirata, Koichi Hayashi

Journal of the Ceramic Society of Japan 134(4) 208-216 2026年4月1日査読有り
Evidence of underlying structural similarities of amorphous materials

Akihiko Hirata, Kengo Nishio, Masayuki Okugawa, Ryusuke Nakamura

Communications Materials 6(1) 2025年7月29日
Unravelling the density-driven modification of the topology generated (vol 132, pg 653, 2024)

Shinji Kohara, Shuya Sato, Motoki Shiga, Yohei Onodera, Hirokazu Masai, Toru Wakihara, Atsunobu Masuno, Akihiko Hirata, Naoto Kitamura, Yasushi Idemoto …

JOURNAL OF THE CERAMIC SOCIETY OF JAPAN 133(2) 65-65 2025年2月
Unravelling the density-driven modification of the topology generated by the interconnection of SiO4 tetrahedra in silica polymorphs

Shinji Kohara, Shuya Sato, Motoki Shiga, Yohei Onodera, Hirokazu Masai, Toru Wakihara, Atsunobu Masuno, Akihiko Hirata, Naoto Kitamura, Yasushi Idemoto …

JOURNAL OF THE CERAMIC SOCIETY OF JAPAN 132(12) 653-662 2024年10月
Local structural modelling and local pair distribution function analysis for Zr-Pt metallic glass

Akihiko Hirata, Satoru Tokuda, Chihiro Nakajima, Siyuan Zha

SCIENTIFIC REPORTS 14(1) 2024年6月10日
Direct observation of the atomic density fluctuation originating from the first sharp diffraction peak in SiO₂ glass

Akihiko Hirata, Shuya Sato, Motoki Shiga, Yohei Onodera, Koji Kimoto, Shinji Kohara

NPG ASIA MATERIALS 16(1) 2024年5月10日
Molecular Dynamics Simulation of Diffusion Behavior in Liquid Sn and Pb

Masato Shiinoki, Akihiko Hirata, Shinsuke Suzuki

METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE 55(1) 446-460 2024年2月
Atomic Environment of Pt in Quasicrystal-Forming Zr70Cu29Pt1 Metallic Glass

Shinya Kudo, Akihiko Hirata

MATERIALS TRANSACTIONS 65(7) 723-727 2024年
Ring-originated anisotropy of local structural ordering in amorphous and crystalline silicon dioxide

Motoki Shiga, Akihiko Hirata, Yohei Onodera, Hirokazu Masai

COMMUNICATIONS MATERIALS 4(1) 2023年11月3日
Virtual Angstrom-Beam Electron Diffraction Analysis for Zr₈₀Pt₂₀ Metallic Glasses

Akihiko Hirata

QUANTUM BEAM SCIENCE 6(4) 2022年12月
Unveiling a Chemisorbed Crystallographically Heterogeneous Graphene/ L1<inf>0</inf>-FePd Interface with a Robust and Perpendicular Orbital Moment

Hiroshi Naganuma, Masahiko Nishijima, Hayato Adachi, Mitsuharu Uemoto, Hikari Shinya, Shintaro Yasui, Hitoshi Morioka, Akihiko Hirata, Florian Godel, Marie Blandine Martin …

ACS Nano 16(3) 4139-4151 2022年3月22日
Correlation between the Charge-Transport Properties and the 3D-Phase Connectivities in Patterned Pt/CeO₂ Nanostructured Composites: Implications for Solid-Oxide Fuel Cells

Yu Wen, Hideki Abe, Akihiko Hirata, Ayako Hashimoto

ACS APPLIED NANO MATERIALS 4(12) 13602-13611 2021年12月24日
Relationship between diffraction peak, network topology, and amorphous-forming ability in silicon and silica

Shinji Kohara, Motoki Shiga, Yohei Onodera, Hirokazu Masai, Akihiko Hirata, Motohiko Murakami, Tetsuya Morishita, Koji Kimura, Kouichi Hayashi

SCIENTIFIC REPORTS 11(1) 2021年11月12日
Crystallization behaviors in superionic conductor Na3PS4

Hiroshi Nakajima, Hirofumi Tsukasaki, Jiong Ding, Takuya Kimura, Takumi Nakano, Akira Nasu, Akihiko Hirata, Atsushi Sakuda, Akitoshi Hayashi, Shigeo Mori

Journal of Power Sources 511 230444-230444 2021年11月査読有り
Graphene-coated nanoporous nickel towards a metal-catalyzed oxygen evolution reaction

Hua-Jun Qiu, Isaac Johnson, Luyang Chen, Weitao Cong, Yoshikazu Ito, Pan Liu, Jiuhui Han, Takeshi Fujita, Akihiko Hirata, Mingwei Chen

NANOSCALE 13(24) 10916-10924 2021年6月28日
Vapor phase dealloying kinetics of MnZn alloys

Zhen Lu, Fan Zhang, Daixiu Wei, Jiuhui Han, Yanjie Xia, Jing Jiang, Mingwang Zhong, Akihiko Hirata, Kentaro Watanabe, Alain Karma …

ACTA MATERIALIA 212 2021年6月15日
Local structure analysis of amorphous materials by angstrom-beam electron diffraction

Akihiko Hirata

MICROSCOPY 70(2) 171-177 2021年4月
Topological trends in ionic transport through metal-oxide composites

Yu Wen, Ayako Hashimoto, Abdillah Sani Bin Mohd Najib, Akihiko Hirata, Hideki Abe

APPLIED PHYSICS LETTERS 118(5) 2021年2月1日
The Characterization of the Oxide Film Formed on Brightly Annealed Al-Added 18%Cr Steel

Mitsuki Sugeoi, Masaharu Hatano, Yasuhide Inoue, Akihiko Hirata, Yasumasa Koyama

JOURNAL OF THE JAPAN INSTITUTE OF METALS AND MATERIALS 85(11) 399-404 2021年
Structural changes during glass formation extracted by computational homology with machine learning

Akihiko Hirata, Tomohide Wada, Ippei Obayashi, Yasuaki Hiraoka

COMMUNICATIONS MATERIALS 1(1) 2020年12月4日

もっとみる

MISC

位相的データ解析による非晶質材料の構造研究

小野寺陽平, 小原真司, 田原周太, 増野敦信, 井上博之, 志賀元紀, 平田秋彦, 土谷浩一, 平岡裕章, 大林一平 …

日本応用数理学会年会講演予稿集(CD-ROM) 2020 2020年
Structural analysis of polycrystalline BiFeO3 films by transmission electron microscopy

Hiroshi Naganuma, Andras Kovacs, Akihiko Hirata, Yoshihiko Hirotsu, Soichiro Okamura

MATERIALS TRANSACTIONS 48(9) 2370-2373 2007年9月
Voronoi analysis of the structure of Ni-Zr-Al ternary metallic glass

T. Fukunaga, K. Itoh, T. Otomo, K. Mori, A. Sugiyama, H. Kato, A. Hasegawa, A. Hirata, Y. Hirotsu, A. C. Hannon

MATERIALS TRANSACTIONS 48(7) 1698-1702 2007年7月
Local atomic structure analysis of Zr-Ni and Zr-Cu metallic glasses using electron diffraction

Akihiko Hirata, Takuro Morino, Yoshihiko Hirotsu, Keiji Itoh, Toshiharu Fukunaga

MATERIALS TRANSACTIONS 48(6) 1299-1303 2007年6月
Local atomic structure analysis of Zr-Ni and Zr-Cu metallic glasses using electron diffraction

Akihiko Hirata, Takuro Morino, Yoshihiko Hirotsu, Keiji Itoh, Toshiharu Fukunaga

Materials Transactions 48(6) 1299-1303 2007年6月
Direct imaging of local atomic ordering in a Pd-Ni-P bulk metallic glass using C-s-corrected transmission electron microscopy

Akihiko Hirata, Yoshihiko Hirotsu, T. G. Nieh, Tadakatsu Ohkubo, Nobuo Tanaka

ULTRAMICROSCOPY 107(2-3) 116-123 2007年2月
Change of nanostructure in (Fe0.5Co0.5)(72)B20Si4Nb4 metallic glass on annealing

Akihiko Hirata, Yoshihiko Hirotsu, Kenji Amiya, Nobuyuki Nishiyama, Akihisa Inoue

THERMEC 2006, PTS 1-5 539-543 2077-+ 2007年
Observation of Local Structural Change in the Course of Primary Crystallization of Metallic Glasses

2007年
Structural Analysis of BiFeO3 Polycrystalline Films by Transmission Electron Microscopy

Mater. Trans. 48 2370-2377 2007年
Local Structure Studies of Metallic Glasses using HREM and Electron Diffraction

2007年
Change of nanostructure in (Fe0.5Co0.5)(72)B20Si4Nb4 metallic glass on annealing

Akihiko Hirata, Yoshihiko Hirotsu, Kenji Amiya, Nobuyuki Nishiyama, Akihisa Inoue

THERMEC 2006, PTS 1-5 539-543 2077-+ 2007年
Mossbauer study of ultrathin Fe/Al multilayer films

D. Kaptas, J. Balogh, T. Kemeny, L. F. Kiss, L. Bujdoso, A. Kovacs, A. Hirata, I. Vincze

PHYSICAL REVIEW B 75(1) 2007年1月
Local Atomic Structure Analysis of Zr-Ni and Zr-Cu Metallic Glasses Using Electron Diffraction

Hirata Akihiko, Morino Takuro, Hirotsu Yoshihiko, ITOH Keiji, FUKUNAGA Toshiharu

Materials transactions 48 1229-1303(6) 1299-1303 2007年
Observation of Local Structural Change in the Course of Primary Crystallization of Metallic Glasses

2007年
Local Structure Studies of Metallic Glasses using HREM and Electron Diffraction

2007年
Local atomic structure of Pd-Ni-P bulk metallic glass examined by high-resolution electron microscopy and electron diffraction

Akihiko Hirata, Yoshihiko Hirotsu, Tadakatsu Ohkubo, Nobuo Tanaka, T. G. Nieh

INTERMETALLICS 14(8-9) 903-907 2006年8月
金属ガラスの構造と基礎物性(A02班)

弘津禎彦, 松原英一郎, 市坪哲, 石丸学, 平田秋彦, 福永俊晴, 伊藤恵司, 大友季哉, 水谷宇一郎, 竹内恒博 …

粉体および粉末冶金 53(1) 90-99 2006年1月15日
Local atomic ordering and nanoscale phase separation in a Pd-Ni-P bulk metallic glass

Y Hirotsu, TG Nieh, A Hirata, T Ohkubo, N Tanaka

PHYSICAL REVIEW B 73(1) 2006年1月
Local atomic structures of amorphous Fe80B20 and Fe70Nb10B20 alloys studied by electron diffraction

A Hirata, Y Hirotsu, E Matsubara

MATERIALS TRANSACTIONS 46(12) 2781-2784 2005年12月
Local atomic structures of amorphous Fe80B20 and Fe70Nb10B20 alloys studied by electron diffraction

A Hirata, Y Hirotsu, E Matsubara

MATERIALS TRANSACTIONS 46(12) 2781-2784 2005年12月

もっとみる

所属学協会

Works(作品等)

共同研究・競争的資金等の研究課題

ガラス構造における擬格子面と位相幾何的秩序

日本学術振興会科学研究費助成事業挑戦的研究(萌芽) 2023年6月 - 2026年3月

平田秋彦
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