Structure-property relationship in the ordered-perovskite-related oxide Sr3.12 Er0.88 Co4 O10.5

Shintaro Ishiwata, Wataru Kobayashi, Ichiro Terasaki, Kenichi Kato, Masaki Takata

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    35 Citations (Scopus)

    Abstract

    Synchrotron x-ray-diffraction patterns were measured and analyzed for a polycrystalline sample of the room-temperature ferromagnet Sr3.12 Er0.88 Co4 O10.5 from 300 to 650 K, from which two structural phase transitions were found to occur successively. The higher-temperature transition at 509 K is driven by ordering of the oxygen vacancies, which is closely related to the metallic state at high temperatures. The lower-temperature transition at 360 K is of first order, at which the ferromagnetic state suddenly appears exhibiting a jump in magnetization and resistivity. Based on the refined structure, possible spin and orbital models for the magnetic order are proposed.

    Original languageEnglish
    Article number220406
    JournalPhysical Review B - Condensed Matter and Materials Physics
    Volume75
    Issue number22
    DOIs
    Publication statusPublished - 2007 Jun 22

    ASJC Scopus subject areas

    • Condensed Matter Physics

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