Unusual impurity effect on room-temperature ferromagnet Sr3YCo4O10.56

Wataru Kobayashi*, S. Yoshida, I. Terasaki

*Corresponding author for this work

    Research output: Contribution to journalReview articlepeer-review

    14 Citations (Scopus)


    We have prepared polycrystalline samples of Sr3YCo4O10.56, Sr2.4Ca0.6YCo4O10.54, and Sr3YCo3.76Mn0.24O10.59, and found that these materials show unusual impurity effects on their transport and magnetic properties. A tiny amount of impurities such as Mn or Ca suppresses room-temperature ferromagnetism of Sr3YCo4O10.56. With the suppression, their resistivities and thermopowers are also dramatically changed. We propose that the unusual impurity effects are caused by the suppression of orbital ordering.

    Original languageEnglish
    Pages (from-to)355-360
    Number of pages6
    JournalProgress in Solid State Chemistry
    Issue number2-4 SPEC. ISS.
    Publication statusPublished - 2007


    • A-site ordering
    • Cobalt oxide
    • Ferromagnetism

    ASJC Scopus subject areas

    • Materials Chemistry


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