高圧力の科学と技術
Online ISSN : 1348-1940
Print ISSN : 0917-639X
連載解説「水素の話」(9)
金属水素化物の高圧研究のフロンティア
青木 勝敏町田 晃彦大村 彩子綿貫 徹
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2008 年 18 巻 3 号 p. 273-278

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The highly compressed state of metal hydride has been investigated to explore structural and electronic transitions characteristic to hydride. The hydrogen atoms play the lead in the transitions, showing displacement in or transfer between the interstitial sites of a metal lattice. One example is the band gap closing observed for a long period lattice of yttrium tri-hydride, YH3, appearing at pressures above 12 GPa. Another example is photochromic event observed again for yttrium hydride, YHx. The former is likely accompanied by the in-site displacement of hydrogen atoms and the latter by the site-to-site transfer.

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© 2008 日本高圧力学会
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