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

    Research output: Contribution to journalArticle

    33 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

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    Perovskite
    Oxides
    Superconducting transition temperature
    oxides
    Oxygen vacancies
    Synchrotrons
    Diffraction patterns
    Magnetization
    Phase transitions
    X rays
    Temperature
    synchrotrons
    x ray diffraction
    diffraction patterns
    orbitals
    magnetization
    electrical resistivity
    room temperature
    oxygen
    perovskite

    ASJC Scopus subject areas

    • Condensed Matter Physics

    Cite this

    Structure-property relationship in the ordered-perovskite-related oxide Sr3.12 Er0.88 Co4 O10.5. / Ishiwata, Shintaro; Kobayashi, Wataru; Terasaki, Ichiro; Kato, Kenichi; Takata, Masaki.

    In: Physical Review B - Condensed Matter and Materials Physics, Vol. 75, No. 22, 220406, 22.06.2007.

    Research output: Contribution to journalArticle

    Ishiwata, Shintaro ; Kobayashi, Wataru ; Terasaki, Ichiro ; Kato, Kenichi ; Takata, Masaki. / Structure-property relationship in the ordered-perovskite-related oxide Sr3.12 Er0.88 Co4 O10.5. In: Physical Review B - Condensed Matter and Materials Physics. 2007 ; Vol. 75, No. 22.
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