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

6 Citations (Scopus)
4 Downloads (Pure)

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

Fingerprint

Neutron diffraction
Perovskite
neutron diffraction
transverse oscillation
perovskites
Oxygen
Jahn-Teller effect
oxygen atoms
magnetic properties
Temperature
temperature
Structural properties
Magnetic properties
oxygen
Phase transitions
cells
Atoms
perovskite

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

Cite this

A high temperature neutron diffraction study of the double perovskite Ba 2 154SmMoO 6. / Wallace, Thomas K.; Ritter, Clemens; McLaughlin, Abbie C.

In: Journal of Solid State Chemistry, Vol. 196, 01.12.2012, p. 379-383.

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.",
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AU - McLaughlin, Abbie C.

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AB - 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.

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