Analysis of local strain fields around individual threading dislocations in GaN substrates by nanobeam x-ray diffraction
- Journal article
- Creator
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T. Hamachi (author) (Search by this author)
https://orcid.org/0000-0002-0631-1729
(unauthenticated)
;
T. Tohei (author) (Search by this author)
https://orcid.org/0000-0002-4113-2566
(unauthenticated)
;
Y. Hayashi (author) (Search by this author)
;
S. Usami (author) (Search by this author)
https://orcid.org/0000-0002-9710-1718
(unauthenticated)
;
;M. Imanishi (author) (Search by this author);Y. Mori (author) (Search by this author);K. Sumitani (author) (Search by this author)Y. Imai (author) (Search by this author)
https://orcid.org/0000-0003-4686-2629
(unauthenticated)
;
S. Kimura (author) (Search by this author)
https://orcid.org/0000-0003-1064-7572
(unauthenticated)
;
A. Sakai (author) (Search by this author)
https://orcid.org/0000-0002-0654-504X
(unauthenticated)
- Keyword
- GaN, Dislocation, SPring-8
- Date published
- 2024-06-14
- Updated at
- 2024-12-05 12:47:52 +0900
Magnetoresistance analysis of two-dimensional hole gases in GaN/AlGaN/GaN double heterostructures
- Journal article
- Creator
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S. Yamada (author) (Search by this author)
https://orcid.org/0009-0004-5821-1078
(unauthenticated)
;
;A. Fujimoto (author) (Search by this author)S. Yagi (author) (Search by this author)
https://orcid.org/0000-0003-4490-6683
(unauthenticated)
;
H. Narui (author) (Search by this author)
https://orcid.org/0000-0003-0803-5550
(unauthenticated)
;
;E. Yamaguchi (author) (Search by this author)Y. Imanaka (author) (Search by this author)
- Keyword
- GaN, Double Heterostructures, Hole gas, Magnetoresistance, Spin-Orbit coupling
- Date published
- 2024-06-24
- Updated at
- 2024-07-13 08:30:10 +0900
Classification for transmission electron microscope images from different amorphous states using persistent homology
- Journal article
- Creator
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Fumihiko Uesugi (author) (Search by this author)National Institute for Materials Science
;
Masashi Ishii (author) (Search by this author)National Institute for Materials Science
- Keyword
- TEM image simulation, GaN, persistent homology, Amorphous structure
- Date published
- 2022-06-06
- Updated at
- 2024-07-04 16:32:11 +0900
Machine learning assisted nanobeam X-ray diffraction based analysis on hydride vapor-phase epitaxy GaN
- Journal article
- Creator
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;Zhendong Wu (author) (Search by this author)Yusuke Hayashi (author) (Search by this author)National Institute for Materials Science
;
;Tetsuya Tohei (author) (Search by this author);Kazushi Sumitani (author) (Search by this author);Yasuhiko Imai (author) (Search by this author);Shigeru Kimura (author) (Search by this author)Akira Sakai (author) (Search by this author)
- Keyword
- GaN, SPring-8, nanoXRD, Machine learning
- Date published
- 2025-08-01
- Updated at
- 2025-07-31 12:30:18 +0900
In situ nanobeam x-ray diffraction of local strain in AlGaN/GaN high-electron-mobility transistors under operating condition
- Journal article
- Creator
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;Akihiro Shimada (author) (Search by this author);Haruna Shiomi (author) (Search by this author)Tetsuya Tohei (author) (Search by this author)
https://orcid.org/0000-0002-4113-2566
(unauthenticated)
;
Yusuke Hayashi (author) (Search by this author)
;
;Masaya Yamaguchi (author) (Search by this author)Junpei Yamamoto (author) (Search by this author)
https://orcid.org/0009-0007-5684-0569
(unauthenticated)
;
Takeaki Hamachi (author) (Search by this author)
https://orcid.org/0000-0002-0631-1729
(unauthenticated)
;
Yasuhiko Imai (author) (Search by this author)
https://orcid.org/0000-0003-4686-2629
(unauthenticated)
;
;Kazushi Sumitani (author) (Search by this author)Shigeru Kimura (author) (Search by this author)
https://orcid.org/0000-0003-1064-7572
(unauthenticated)
;
Shota Kaneki (author) (Search by this author)
https://orcid.org/0000-0003-0806-8571
(unauthenticated)
;
Tamotsu Hashizume (author) (Search by this author)
https://orcid.org/0009-0004-8229-9460
(unauthenticated)
;
Akira Sakai (author) (Search by this author)
https://orcid.org/0000-0002-0654-504X
(unauthenticated)
- Keyword
- GaN, HEMT, Strain, In situ
- Date published
- 2025-08-21
- Updated at
- 2025-08-23 08:30:23 +0900
Local defect and mid-gap state analysis of GaN using monochromated EELS combined with nanodiffraction and atomic-resolution imaging
- Journal article
- Creator
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Shunsuke Yamashita (author) (Search by this author)
https://orcid.org/0000-0003-1702-1708
(unauthenticated)
;
;Sei Fukushima (author) (Search by this author)Jun Kikkawa (author) (Search by this author)Center for Basic Research on Materials, National Institute for Materials Science (NIMS)
;
;Ryoji Arai (author) (Search by this author)Yuya Kanitani (author) (Search by this author)
https://orcid.org/0009-0002-2154-5571
(unauthenticated)
;
Koji Kimoto (author) (Search by this author)Center for Basic Research on Materials, National Institute for Materials Science (NIMS)
;
Yoshihiro Kudo (author) (Search by this author)
- Keyword
- defect, GaN, EELS, 4D-STEM, HAADF-STEM, ABF-STEM, HAXPES
- Date published
- 2024-03-01
- Updated at
- 2024-03-19 16:56:29 +0900
Vacancy-type defects introduced by mechanical polishing in ammonothermal GaN studied by a monoenergetic positron beam
- Journal article
- Creator
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Akira Uedono (author) (Search by this author)
https://orcid.org/0000-0001-6224-4869
(unauthenticated)
;
Shoji Ishibashi (author) (Search by this author)
https://orcid.org/0000-0002-4896-3530
(unauthenticated)
;
Kohei Shima (author) (Search by this author)
https://orcid.org/0000-0003-0967-141X
(unauthenticated)
;
;Shigefusa F. Chichibu (author) (Search by this author)Kacper Sierakowski (author) (Search by this author)
https://orcid.org/0000-0002-9447-1182
(unauthenticated)
;
Makoto Oishi (author) (Search by this author)
https://orcid.org/0000-0003-3402-4556
(unauthenticated)
;
Noriyuki Okada (author) (Search by this author)
https://orcid.org/0009-0002-0090-5646
(unauthenticated)
;
Takuro Nagai (author) (Search by this author)
;
Michal Bockowski (author) (Search by this author)
https://orcid.org/0000-0003-1616-685X
(unauthenticated)
- Keyword
- Mechanical polishing, GaN, Vacancy, Defect, Positron annihilation
- Date published
- 2026-04-12
- Updated at
- 2026-04-20 08:56:29 +0900
Degradation of vertical GaN diodes during proton and xenon-ion irradiation
- Journal article
- Creator
-
;Hironori Okumura (author) (Search by this author);Yohei Ogawara (author) (Search by this author);Manabu Togawa (author) (Search by this author);Masaya Miyahara (author) (Search by this author);Tadaaki Isobe (author) (Search by this author);Kosuke Itabashi (author) (Search by this author);Jiro Nishinaga (author) (Search by this author)Masataka Imura (author) (Search by this author)National Institute for Materials Science
- Keyword
- Schottky barrier diode, MOCVD, Vertical-type PN junction diode, Proton, Xe, Radiation irradiations, GaN
- Date published
- 2023-06-01
- Updated at
- 2024-08-24 08:30:18 +0900
Continuous real-time O 1s core XPS spectra of initial O2 molecule adsorption on polar and m-plane surfaces of GaN
- Dataset
- Creator
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SUMIYA, Masatomo (author) (Search by this author)National Institute for Materials Science
- Keyword
- GaN, Gallium nitride, Oxidation, Adsorption, XPS, SPring-8
- Date published
- 2020-11-19
- Updated at
- 2024-01-05 22:13:22 +0900
Uncovering crystal structure evolution via nanobeam X-ray diffraction with a continuity-driven machine learning approach
- Journal article
- Creator
-
Zhendong Wu (author) (Search by this author)
https://orcid.org/0000-0002-9882-4133
(unauthenticated)
;
Tetsuya Tohei (author) (Search by this author)
https://orcid.org/0000-0002-4113-2566
(unauthenticated)
;
Yusuke Hayashi (author) (Search by this author)
;
;Shigeyoshi Usami (author) (Search by this author);Masayuki Imanishi (author) (Search by this author);Yusuke Mori (author) (Search by this author);Junichi Takino (author) (Search by this author);Kazushi Sumitani (author) (Search by this author)Yasuhiko Imai (author) (Search by this author)
https://orcid.org/0000-0003-4686-2629
(unauthenticated)
;
Shigeru Kimura (author) (Search by this author)
https://orcid.org/0000-0003-1064-7572
(unauthenticated)
;
Akira Sakai (author) (Search by this author)
https://orcid.org/0000-0002-0654-504X
(unauthenticated)
- Keyword
- GaN, nanoXRD, ML
- Date published
- 2026-02-15
- Updated at
- 2026-02-26 12:30:06 +0900