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 journalArticlepeer-review

    27 Citations (Scopus)


    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
    Issue number10
    Publication statusPublished - Oct 2008


    • Jahn-Teller effect
    • Manganese oxide
    • 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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