T
Toshiyuki Matsunaga
Researcher at Kyoto University
Publications - 106
Citations - 3458
Toshiyuki Matsunaga is an academic researcher from Kyoto University. The author has contributed to research in topics: Amorphous solid & Crystal structure. The author has an hindex of 27, co-authored 96 publications receiving 3057 citations. Previous affiliations of Toshiyuki Matsunaga include Panasonic.
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Structure of laser-crystallized Ge2Sb2+xTe5 sputtered thin films for use in optical memory
TL;DR: In this paper, the structure of laser-crystallized thin films of Ge2Sb2+xTe5 (0.0
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Structures of stable and metastable Ge2Sb2Te5, an intermetallic compound in GeTe-Sb2Te3 pseudobinary systems.
TL;DR: The most widely used memory materials for rewritable phase-change optical disks are the GeTe-Sb2Te3 pseudobinary compounds, which crystallizes into a cubic close-packed structure with a six-layer period (metastable phase) in the non-thermal equilibrium state.
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From local structure to nanosecond recrystallization dynamics in AgInSbTe phase-change materials
Toshiyuki Matsunaga,Jaakko Akola,Jaakko Akola,Jaakko Akola,Shinji Kohara,Tetsuo Honma,Keisuke Kobayashi,Eiji Ikenaga,Robert O. Jones,Robert O. Jones,Noboru Yamada,Masaki Takata,Rie Kojima +12 more
TL;DR: These structures suggest a bond-interchange model, where a sequence of small displacements of Sb atoms accompanied by interchanges of short and long bonds is the origin of the rapid crystallization of a-AIST, which differs profoundly from crystallization in a-GST.
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Structural investigation of GeSb 2 Te 4 : A high-speed phase-change material
TL;DR: In this article, the structure transition from the metastable to the stable phase is due to the vacancy diffusion, and the results of their investigation are as follows: The metastable phase has a very open structure, which contains one vacancy per eight atoms.
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Structural basis for the fast phase change of Ge2Sb2Te5: Ring statistics analogy between the crystal and amorphous states
Shinji Kohara,Kenichi Kato,Shigeru Kimura,Hitoshi Tanaka,Takeshi Usuki,Kentaro Suzuya,Hiroshi Tanaka,Yutaka Moritomo,Toshiyuki Matsunaga,Noboru Yamada,Yoshihito Tanaka,Hiroyoshi Suematsu,Masaki Takata +12 more
TL;DR: The three-dimensional atomic configuration of amorphous Ge2Sb2Te5 and GeTe was derived by reverse Monte Carlo simulation with synchrotron-radiation x-ray diffraction data as mentioned in this paper.