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Abe, Hiroshi; Aone, Shigeo*; Morimoto, Ryo*; Uchida, Hirohisa*
Journal of Alloys and Compounds, 580(Suppl.1), p.S219 - S221, 2013/12
Times Cited Count：5 Percentile：31.65(Chemistry, Physical)no abstracts in English
Fe M
ssbauer spectroscopy of RFe
(R = Y, Gd) hydrides synthesized under ultra-high-pressure hydrogenMitsui, Takaya; Masuda, Ryo*; Seto, Makoto; Hirao, Naohisa*; Matsuoka, Takehiro*; Nakamura, Yumiko*; Sakaki, Koji*; Enoki, Hirotoshi*
Journal of Alloys and Compounds, 580(Suppl.1), p.S264 - S267, 2013/12
Times Cited Count：8 Percentile：42.58(Chemistry, Physical)Moriyama, Kazuhiro*; Muraki, Keita*; Kishimoto, Masahiko*; Abe, Hiroshi; Hiraki, Takeshi*; Uchida, Hirohisa*
no journal, ,
no abstracts in English
Saito, Hiroyuki; Endo, Naruki; Machida, Akihiko; Katayama, Yoshinori; Aoki, Katsutoshi
no journal, ,
observation of hydrogenation of a CsCl-type TiFe alloy at high pressure and high temperatureEndo, Naruki; Saito, Hiroyuki; Machida, Akihiko; Katayama, Yoshinori
no journal, ,
Machida, Akihiko
no journal, ,
Structural and electronic properties of hydrides and/or hydrogen storage materials have been investigated focusing on the interactions between hydrogen atoms and their surrounding atoms using synchrotron radiation (SR) X-rays at SPring-8, Japan. The SR X-rays become powerful and useful tools for studying the chemical and physical properties of hydrides and/or hydrogen storage materials. At SPring-8, the in-situ measurements apparatuses and systems have been developed and constructed to investigate the hydrogen absorbing/desorbing processes. For example, highly brilliant SR X-rays enable us to perform the time-resolved measurements with high time-resolution. Hence, high speed measurements on hydrogen absorbing and desorbing processes have been applied to X-ray diffraction and X-ray absorption measurements. My talk will cover the latest results on the SR studies of the structural and electronic properties of hydrides mainly using in-situ measurement systems.
Machida, Akihiko; Honda, Mitsunori*; Hattori, Takanori; Sano, Asami; Watanuki, Tetsu; Katayama, Yoshinori; Aoki, Katsutoshi; Komatsu, Kazuki*; Arima, Hiroshi*; Oshita, Hidetoshi*; et al.
no journal, ,
Hydrogen atoms absorbed in a metal occupy the interstitial sites of the metal lattice. In an fcc metal lattice, each metal atom has two tetrahedral (T) and one octahedral (O) sites that can accommodate hydrogen. Rare-earth metal La forms T-site occupied LaH
and fully occupied LaH
. Previous X-ray diffraction measurements revealed the pressure-induced decomposition of an fcc-LaH into H-rich and H-poor phases around 11 GPa. We performed the neutron diffraction measurements on LaD, and found the formation of NaCl-type LaD as a phase separation products. We have first found the NaCl-type rare-earth metal monohydride.
Matsumura, Daiju; Okajima, Yuka*; Nishihata, Yasuo; Mizuki, Junichiro
no journal, ,
