Temperature and pressure dependent structural studies of the ordered double perovskites Sr2TbRu1-xIr xO6

Qingdi Zhou, Brendan J. Kennedy, Kia S. Wallwork, Margaret M. Elcombe, Yongjae Lee, Thomas Vogt

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

High resolution powder diffraction studies are reported for the series of mixed RuIr perovskites Sr2TbRu1-xIr xO6. Using a combination of synchrotron X-ray and neutron powder diffraction precise structures are established for the two end-member oxides, where the Tb oxidation state changes from +3 in the Ru oxide to +4 in the Ir containing oxide. The structures of both oxides are monoclinic. Composition dependent studies show that this valence transition is first order. Variable temperature diffraction show no evidence for any structural or valence state transitions. However, upon application of pressure Sr2TbRu 0.3Ir0.7O6 undergoes a valence state transition at low pressures.

Original languageEnglish
Pages (from-to)2282-2291
Number of pages10
JournalJournal of Solid State Chemistry
Volume178
Issue number7
DOIs
Publication statusPublished - 2005 Jul 1

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perovskites
Oxides
oxides
valence
diffraction
Temperature
Neutron powder diffraction
temperature
Synchrotrons
X ray powder diffraction
synchrotrons
low pressure
Diffraction
neutrons
Oxidation
oxidation
high resolution
Chemical analysis
x rays

All Science Journal Classification (ASJC) codes

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

Cite this

Zhou, Qingdi ; Kennedy, Brendan J. ; Wallwork, Kia S. ; Elcombe, Margaret M. ; Lee, Yongjae ; Vogt, Thomas. / Temperature and pressure dependent structural studies of the ordered double perovskites Sr2TbRu1-xIr xO6. In: Journal of Solid State Chemistry. 2005 ; Vol. 178, No. 7. pp. 2282-2291.
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Temperature and pressure dependent structural studies of the ordered double perovskites Sr2TbRu1-xIr xO6. / Zhou, Qingdi; Kennedy, Brendan J.; Wallwork, Kia S.; Elcombe, Margaret M.; Lee, Yongjae; Vogt, Thomas.

In: Journal of Solid State Chemistry, Vol. 178, No. 7, 01.07.2005, p. 2282-2291.

Research output: Contribution to journalArticle

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AB - High resolution powder diffraction studies are reported for the series of mixed RuIr perovskites Sr2TbRu1-xIr xO6. Using a combination of synchrotron X-ray and neutron powder diffraction precise structures are established for the two end-member oxides, where the Tb oxidation state changes from +3 in the Ru oxide to +4 in the Ir containing oxide. The structures of both oxides are monoclinic. Composition dependent studies show that this valence transition is first order. Variable temperature diffraction show no evidence for any structural or valence state transitions. However, upon application of pressure Sr2TbRu 0.3Ir0.7O6 undergoes a valence state transition at low pressures.

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