Formation of NaCl-type monodeuteride LaD by the disproportionation reaction of LaD 2

A. MacHida, M. Honda, T. Hattori, A. Sano-Furukawa, T. Watanuki, Y. Katayama, K. Aoki, K. Komatsu, H. Arima, H. Ohshita, K. Ikeda, K. Suzuya, T. Otomo, M. Tsubota, K. Doi, T. Ichikawa, Y. Kojima, D. Y. Kim

研究成果: Article査読

10 被引用数 (Scopus)

抄録

Previous x-ray diffraction measurements revealed the pressure-induced decomposition of an fcc LaH 2.3 into H-rich and H-poor fcc phases around 11 GPa. The present neutron diffraction measurements on LaD 2 confirm the formation of NaCl-type LaD as a counterpart of the D-rich LaD 2+δ by disproportionation. First-principles enthalpy and lattice dynamic calculations demonstrate that the NaCl-type LaH is stabilized at high pressures and can be recovered at ambient conditions. Finding the NaCl-type LaH will pave the way for investigations on the site-dependent nature of hydrogen-metal interactions.

本文言語English
論文番号205501
ジャーナルPhysical review letters
108
20
DOI
出版ステータスPublished - 2012 5 14

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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