High temperature 1H NMR study of proton conducting oxide SrCe0.95Y0.05H0.004O3-δ

Hideki Maekawa, Naohito Kashii, Jun Ichi Kawamura, Yukio Hinatsu, Tsutomu Yamamura

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13 Citations (Scopus)

Abstract

The ionic motion of protons in yttrium doped SrCeO3 perovskite has been investigated by means of high temperature 1H NMR and ac electric conductivity measurements. The temperature dependences of line shapes and spin-lattice relaxation times (T1) were obtained. The inverse temperature versus logarithm of T1 plot shows asymmetric temperature dependence with respect to its minimum value, and was well interpreted using the classical Bloembergen, Purcell and Pound (BPP) formula with introducing distributions of the activation energies. The averaged correlation times of the proton hopping were obtained from the T1 data. The conductivity calculated from the Einstein equation using NMR correlation times assuming the jump distance of proton hopping as 1 angstrom yields quantitative agreement with the measured conductivity in a wide temperature range.

Original languageEnglish
Pages (from-to)231-236
Number of pages6
JournalSolid State Ionics
Volume122
Issue number1-4
DOIs
Publication statusPublished - 1999 Jul 1
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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