M
Masao Yonemura
Researcher at KEK
Publications - 101
Citations - 7099
Masao Yonemura is an academic researcher from KEK. The author has contributed to research in topics: Neutron diffraction & Lithium. The author has an hindex of 22, co-authored 94 publications receiving 5431 citations. Previous affiliations of Masao Yonemura include Graduate University for Advanced Studies & Ibaraki University.
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Journal ArticleDOI
A lithium superionic conductor
Noriaki Kamaya,Kenji Homma,Yuichiro Yamakawa,Masaaki Hirayama,Ryoji Kanno,Masao Yonemura,Takashi Kamiyama,Yuki Kato,Shigenori Hama,Koji Kawamoto,Akio Mitsui +10 more
TL;DR: A lithium superionic conductor, Li(10)GeP(2)S(12) that has a new three-dimensional framework structure that exhibits an extremely high lithium ionic conductivity of 12 mS cm(-1) at room temperature, which represents the highest conductivity achieved in a solid electrolyte, exceeding even those of liquid organic electrolytes.
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Room-temperature miscibility gap in LixFePO4.
Atsuo Yamada,Hiroshi Koizumi,Shin-ichi Nishimura,Noriyuki Sonoyama,Ryoji Kanno,Masao Yonemura,Tatsuya Nakamura,Yo Kobayashi +7 more
TL;DR: Experimental evidence is provided that Lix FePO4, at room temperature, can be described as a mixture of the Fe3+/Fe2+ mixed-valent intermediate LiαFePO4 and Li1−βFePO 4 phases, and encourages further improvement of this important class of compounds at ambient temperatures.
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Rietveld analysis software for J-PARC
R. Oishi,Masao Yonemura,Y. Nishimaki,Syuuki Torii,Akinori Hoshikawa,Toru Ishigaki,Takahiro Morishima,Kazuhiro Mori,Takashi Kamiyama +8 more
TL;DR: Z-Code as discussed by the authors is a software suite for powder diffraction data analysis in the Materials and Life Science Facility (MLF) of the Japan Proton Accelerator Research Complex (J-PARC).
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Giant magneto-elastic coupling in multiferroic hexagonal manganites
Seongsu Lee,Seongsu Lee,A. Pirogov,A. Pirogov,Misun Kang,Kwang Hyun Jang,Masao Yonemura,Takashi Kamiyama,Sang-Wook Cheong,Fabia Gozzo,Namsoo Shin,Hiroyuki Kimura,Yukio Noda,Je-Geun Park,Je-Geun Park,Je-Geun Park +15 more
TL;DR: This paper shows, using a combination of diffraction techniques, that the hexagonal manganites RMnO3 undergo an isostructural transition with exceptionally large atomic displacements: two orders of magnitude larger than those seen in any other magnetic material, resulting in an unusually strong magneto-elastic coupling.
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Crystal structure and phase transitions of the lithium ionic conductor Li3PS4
TL;DR: In this article, the crystal structures of and phase transitions in the Li3PS4, which is part of the thio-LISICON (LIthium Super Ionic CONductor) family, were studied using high-temperature synchrotron X-ray diffraction measurements and thermal analysis.