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 language||English (US)|
|Journal||Journal of Physics Condensed Matter|
|State||Published - Jun 3 1996|
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics