Proton diffusivity in SrZrO3: Sc3+ single crystals studied by infrared absorption spectroscopy

H. Yugami, Y. Shibayama, T. Hattori, M. Ishigame

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)

Abstract

The diffusivity of protons in Sc3+ doped-SrZrO3 single crystals have been determined by the infrared absorption technique in the temperature range of 400-750 °C. The proton diffusion coefficient D has been evaluated by two different methods, i.e. (1) the sudden change of PH2O and (2) the exchange between H+ and D+-vapor. It is found that the D value of proton obtained in SrZrO3 single crystals is smaller than that obtained in ceramics, and the activation energy of D obtained by the method (1) is larger than that of ceramics. From these results, comes a suggestion that the defect concentration (or distribution) in the ceramics grains may be different from that in single crystals.

Original languageEnglish
Pages (from-to)171-176
Number of pages6
JournalSolid State Ionics
Volume79
Issue numberC
DOIs
Publication statusPublished - 1995 Jul

Keywords

  • Diffusion coefficient
  • Infrared absorption
  • Proton conductors

ASJC Scopus subject areas

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

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