Orbital ordering of intermediate-spin state of Co3+ in Sr 3YCo4O10.5

Hironori Nakao*, Tetsuya Murata, Daisuke Bizen, Youichi Murakami, Kenji Ohoyama, Kazuyoshi Yamada, Shintaro Ishiwata, Wataru Kobayashi, Ichiro Terasaki

*この研究の対応する著者

    研究成果: Article査読

    33 被引用数 (Scopus)

    抄録

    The orbital ordering and spin state in the room-temperature ferromagnet Sr3YCo4O10.5 were investigated by a resonant X-ray scattering technique. A resonating signal with a σ → π' scattering component was observed at (h00), where h = 2n + 1 (n: integer), near the 1s → eg transition energy of Co. This provides direct evidence of not only eg orbital ordering but also the existence of the intermediate-spin (IS) state. Moreover, we suggest that the ferrimagnetism is induced by the eg orbital ordering of the IS state of Co3+. The peculiar eg orbital, spin-state, and magnetic orderings are also discussed.

    本文言語English
    論文番号023711
    ジャーナルJournal of the Physical Society of Japan
    80
    2
    DOI
    出版ステータスPublished - 2011 2月

    ASJC Scopus subject areas

    • 物理学および天文学(全般)

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