Hydrogen-induced crystal structural transformation of FePt nanoparticles at low temperature

Masafumi Nakaya, Masayuki Kanehara, Miho Yamauchi, Hiroshi Kitagawa, Toshiharu Teranishi

    研究成果: Contribution to journalArticle査読

    28 被引用数 (Scopus)

    抄録

    The hydrogen-induced crystal structural transformation of FePt nanoparticles from a chemically disordered face-centered-cubic (fee) structure to a chemically ordered L10 structure was first demonstrated at around 300°C. The hydrogen treatment at low temperature led to not complete but considerable suppression of the nanoparticle coalescence. The obtained L10-FePt nanoparticles exhibited ferromagnetic property with large coercivity at room temperature. The ordering degree of FePt nanoparticles was dependent on both the hydrogen pressure and treatment time.

    本文言語英語
    ページ(範囲)7231-7234
    ページ数4
    ジャーナルJournal of Physical Chemistry C
    111
    20
    DOI
    出版ステータス出版済み - 5 24 2007

    All Science Journal Classification (ASJC) codes

    • 電子材料、光学材料、および磁性材料
    • エネルギー(全般)
    • 物理化学および理論化学
    • 表面、皮膜および薄膜

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