Effects of rare earth cations doped for La site on the oxide ionic conductivity of LaGaO3-based perovskite type oxide

Tatsumi Ishihara, Hideaki Matsuda, Yusaku Takita

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267 Citations (Scopus)

Abstract

For the suppression of hole conduction in the high oxygen partial pressure range, effects of the addition of small amount of rare earth cations were investigated in this study with La0.8Sr0.2Ga0.8Mg0.2O3 - δ. It was found that the addition of small amount of rare earth cations for La site in LaGaO3 was effective for the suppression of hole conduction under high oxygen partial pressure, albeit the electrical conductivity decreased slightly. In particular, perovskite oxide of (La0.9Nd0.1)0.8Sr0.2Ga0.8Mg0.2O3 - δ exhibits almost pure oxide ionic conduction over the oxygen partial pressure from 1 to 10-21 atm, and the electrical conductivity attains the value of log (σ/S cm-1) = -0.5 at 1223 K.

Original languageEnglish
Pages (from-to)147-151
Number of pages5
JournalSolid State Ionics
Volume79
Issue numberC
DOIs
Publication statusPublished - Jul 1995
Externally publishedYes

All Science Journal Classification (ASJC) codes

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

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