Doping effect on crystal structure of fast oxide ion conductor LaGaO 3-based perovskite compounds

Masahiro Kajitani, Motohide Matsuda, Akinori Hoshikawa, Takashi Kamiyama, Fujio Izumi, Michihiro Miyake

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Doping effects of Sr and/or Mg on the crystal structures of LaGaO 3 perovskites were investigated. The doping with Mg into Ga-site in LaGaO3 led to structural change from the orthorhombic primitive lattice (Pbnm) to the orthorhombic body-centered lattice (Ibmm) at room temperature. The orthorhombic cell (Ibmm) of LaGa0.9Mg 0.1O2.95 changed to the monoclinic (I2/a) by doping with Sr into La site. Neutron powder diffraction analyses revealed that these compounds had GaO6 octahedral tilt. The GaO6 octahedral tilt angles were reduced with doping with Sr and/or Mg.

Original languageEnglish
Pages (from-to)227-230
Number of pages4
JournalKey Engineering Materials
Volume320
DOIs
Publication statusPublished - Jan 1 2006

Keywords

  • Doping Effect
  • Lanthanum Gallate
  • Neutron Diffraction
  • Oxide Ion Conductor
  • Perovskite

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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