EXAFS study of LaNi5 and LaNi4.5Al0.5

O. Palumbo, C. Castellano, A. Paolone, F. Cordero, R. Cantelli, Y. Nakamura, E. Akiba

研究成果: Contribution to journalArticle査読

7 被引用数 (Scopus)

抄録

We report extended X-ray absorption fine structure measurements in the temperature range between 20 and 300 K at the Ni K absorption edge on LaNi5 and LaNi4.5Al0.5 before and after hydrogen charging. In agreement with previous studies, an increase of the Ni-Ni distance has been found when Ni atoms are partially substituted by Al. For all the samples, the Debye-Waller factors of the Ni-Ni first sub-shells have been fitted with a correlated Debye model plus a temperature independent static disorder, obtaining a Debye temperature dependence on the Al content. Even a small hydrogen content has been found to increase the static contribution to the local disorder around Ni atoms.

本文言語英語
ページ(範囲)33-36
ページ数4
ジャーナルJournal of Alloys and Compounds
433
1-2
DOI
出版ステータス出版済み - 5 16 2007
外部発表はい

All Science Journal Classification (ASJC) codes

  • 材料力学
  • 機械工学
  • 金属および合金
  • 材料化学

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