A high temperature neutron diffraction study of the double perovskite Ba 2 154SmMoO 6

Thomas K. Wallace, Clemens Ritter, Abbie C. McLaughlin*

*Corresponding author for this work

Research output: Contribution to journalArticle

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Abstract

Ba 2LnMoO 6 double perovskites have been recently shown to display a wide range of interesting magnetic and structural properties; Ba 2 154SmMoO 6 exhibits simultaneous antiferromagnetic order and a Jahn-Teller distortion. Here we report a high temperature neutron diffraction study of Ba 2 154SmMoO 6 from 353 to 877 K. The results evidence a tetragonal to cubic phase transition at 423 K. Above this temperature the thermal displacement parameters of the oxygen atoms are modelled anisotropically as a result of a transverse vibration of the bridging oxygen. A smooth increase in the cell parameter a is observed with temperature for Ba 2 154SmMoO 6.

Original languageEnglish
Pages (from-to)379-383
Number of pages5
JournalJournal of Solid State Chemistry
Volume196
DOIs
Publication statusPublished - 1 Dec 2012

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Keywords

  • Double perovskite
  • Neutron diffraction
  • 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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