Structural characterisation of the perovskite series Sr0.9-xCaxCe0.1MnO3: Influence of the Jahn-Teller effect

Brendan J. Kennedy, Jimmy Ting, Qingdi Zhou, Zhaoming Zhang, Motohide Matsuda, Michihiro Miyake

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Fifteen perovskite-type compounds Sr0.9-xCaxCe0.1MnO3, x=0-0.9 in steps as fine as 0.05, have been synthesised by solid state methods, and the room temperature structures characterised using X-ray synchrotron powder diffraction. At low Ca contents (x≤0.45) the structures are tetragonal in space group I4/mcm and at high Ca contents (x≥0.55) the compounds are orthorhombic in space group Pbnm. At room temperature these two phases co-exist in the compound with x=0.5. XANES measurements show the Ce to be present as Ce4+ in all the oxides. High temperature structures are reported for selected members.

Original languageEnglish
Pages (from-to)954-959
Number of pages6
JournalJournal of Solid State Chemistry
Volume182
Issue number4
DOIs
Publication statusPublished - Apr 2009

Keywords

  • Jahn-Teller effect
  • Perovskite
  • Phase transition

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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