The influence of cation non-stoichiometry on the properties of undoped and gadolinia-doped barium cerate

D. Shima, S. M. Haile*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

191 Scopus citations

Abstract

The influence of A:B cation non-stoichiometry on the structural and electrical properties of BaCeO3 and of 15% Gd-doped BaCeO3 has been investigated. X-ray powder diffraction and water uptake measurements suggest the occupation of Ba sites by Gd in barium-deficient, doped materials. This phenomenon is exacerbated by high temperature processing, which causes additional loss of barium. The relationship between defect chemistry, stoichiometry and conductivity, as measured by a.c. impedance spectroscopy, is discussed.

Original languageEnglish (US)
Pages (from-to)443-455
Number of pages13
JournalSolid State Ionics
Volume97
Issue number1-4
StatePublished - May 1 1997

Keywords

  • BaCeO
  • Barium cerate
  • Defect chemistry
  • Proton conduction
  • Stoichiometry

ASJC Scopus subject areas

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

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