Localized motion of hydrogen in C15-type TaV2: A quasielastic neutron scattering study

A. V. Skripov, J. C. Cook, Christof Karmonik, R. Hempelmann

Research output: Contribution to journalArticle

18 Scopus citations

Abstract

In order to clarify the nature of the unusual low-temperature hydrogen motion in TaV2, we have performed high-resolution quasielastic neutron scattering measurements on TaV2H0.6 in the temperature range 10-300 K. The results confirm the existence of localized H motion with the hopping rate of the order of 109 s-1 at 90 K. The temperature dependence of the hopping rate appears to be non-Arrhenius. The behaviour of the elastic incoherent structure factor is consistent with the models of H jumps between three or six sites on a circle with radius r ≈ 1.1 Å.

Original languageEnglish (US)
JournalJournal of Physics Condensed Matter
Volume8
Issue number23
DOIs
StatePublished - Jun 3 1996

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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