Nmr investigation of zrmn2Hx and H1Y2H2.1 Hydrides

J. Shinar, D. Davidov, D. Shaltiel, N. Kaplan

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

The proton NMR relaxation times and Knight shifts are reported for the hydrides HfV2H2.1and ZrMnHx, (x = 2.0, 2.45, 3.0, 3.2, 3.4) in the temperature range 160<T<400K using the spinecho method. The results are interpreted in terms of a diffusional relaxation mechanism as well as a magnetic relaxation mechanism for the hydride ZrMn2Hx. The diffusional activation energy and the proton jump frequency were extracted from our measurements on HfV2H2.1.to be 4.3 kcal/mole and 3×1012s-1 respectively. The diffusional activation energies are almost independent of hydrogen concentration, x, in ZrMn2Hx, and equal to 3.7 ±0.6 kcal/mole approximately. Our data is compared to diffusion properties and sorption properties of other intermetallic hydrides.

Original languageEnglish
Pages (from-to)69-77
Number of pages9
JournalZeitschrift fur Physikalische Chemie
Volume117
Issue number117
DOIs
StatePublished - 1979

Keywords

  • Activation energies
  • HfVH
  • Hydride
  • Proton NMR relaxation
  • ZrMnH

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