Selected area and convergent-beam electron diffraction of LaGaO3 and LaGa0.9Mg0.1O2.95 - Space group determinations and identifi{ligature}cation of anti-phase domain structure

Yoichiro Ogata, Kenji Tsuda, Mutsumi Yamaguchi, Takayuki Fumoto, Tatsuya Furuya, Takuya Hashimoto

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Selected area and convergent-beam electron diffraction have been performed on LaGaO3 at room temperature and 220 °C and LaGa0.9Mg0.1O2.95 at room temperature. It has been experimentally established for the fi{ligature}rst time that the space groups of the orthorhombic LaGaO3 at room temperature and rhombohedral one at 220 °C are Pbnm (No. 62) and R3-c (No. 167), respectively. Crystal system of LaGa0.9Mg0.1O2.95 at room temperature has been settled to be orthorhombic with space group of Pbnm (No. 62). Existence of a long-period anti-phase domain structure in LaGa0.9Mg0.1O2.95 has been indicated from splitting and broadening of selected area electron diffraction spots.

Original languageEnglish
Pages (from-to)1113-1121
Number of pages9
JournalSolid State Ionics
Volume178
Issue number15-18
DOIs
Publication statusPublished - 2007 Jun 1

Keywords

  • Convergent-beam electron diffraction (CBED)
  • Mg-substituted LaGaO
  • Oxide-ionic conductor
  • Perovskite structure
  • Selected area electron diffraction (SAED)

ASJC Scopus subject areas

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

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