Structural and electronic phase transitions in Sr1-xCe xMnO3 perovskites

Brendan J. Kennedy, Paul J. Saines, Qingdi Zhou, Zhaoming Zhang, Motohide Matsuda, Michihiro Miyake

Research output: Contribution to journalArticle

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Abstract

The structures of eight members of the series Sr1-xCe xMnO3 with 0.075≤x≤0.4 have been established using synchrotron X-ray powder diffraction. These exhibit the sequence of structures cubic/Pm3̄m x≈0.08/→ tetragonal/14/mcm x≈0.35/rarr; orthorhombic/Imma with increasing Ce content. Unusual peak broadening due to domainwall scattering is observed near the composition-induced first-order cubic-tetragonal transition. The temperature dependence of the structures for three examples x = 0.1, 0.2 and 0.35 is described. For the x = 0.1 and 0.35 samples evidence for a first-order loss of the orbital ordering associated with a cooperative Jahn-Teller distortion is presented. The onset of the orbitally disordered state is accompanied by a discontinuous reduction in cell volume.

Original languageEnglish
Pages (from-to)2639-2645
Number of pages7
JournalJournal of Solid State Chemistry
Volume181
Issue number10
DOIs
Publication statusPublished - Oct 2008

Fingerprint

Jahn-Teller effect
perovskites
Synchrotrons
X ray powder diffraction
synchrotrons
Phase transitions
Scattering
orbitals
temperature dependence
cells
Chemical analysis
scattering
electronics
diffraction
x rays
Temperature

Keywords

  • Jahn-Teller effect
  • Manganese oxide
  • Perovskite
  • Phase transition

ASJC Scopus subject areas

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

Cite this

Kennedy, B. J., Saines, P. J., Zhou, Q., Zhang, Z., Matsuda, M., & Miyake, M. (2008). Structural and electronic phase transitions in Sr1-xCe xMnO3 perovskites. Journal of Solid State Chemistry, 181(10), 2639-2645. https://doi.org/10.1016/j.jssc.2008.06.022

Structural and electronic phase transitions in Sr1-xCe xMnO3 perovskites. / Kennedy, Brendan J.; Saines, Paul J.; Zhou, Qingdi; Zhang, Zhaoming; Matsuda, Motohide; Miyake, Michihiro.

In: Journal of Solid State Chemistry, Vol. 181, No. 10, 10.2008, p. 2639-2645.

Research output: Contribution to journalArticle

Kennedy, BJ, Saines, PJ, Zhou, Q, Zhang, Z, Matsuda, M & Miyake, M 2008, 'Structural and electronic phase transitions in Sr1-xCe xMnO3 perovskites', Journal of Solid State Chemistry, vol. 181, no. 10, pp. 2639-2645. https://doi.org/10.1016/j.jssc.2008.06.022
Kennedy, Brendan J. ; Saines, Paul J. ; Zhou, Qingdi ; Zhang, Zhaoming ; Matsuda, Motohide ; Miyake, Michihiro. / Structural and electronic phase transitions in Sr1-xCe xMnO3 perovskites. In: Journal of Solid State Chemistry. 2008 ; Vol. 181, No. 10. pp. 2639-2645.
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