Pd nanoparticle embedded with only one Co atom behaves as a single-particle magnet

Yoshikazu Ito, Akira Miyazaki, Ken Ichi Fukui, Suresh Valiyaveettil, Toshihiko Yokoyama, Toshiaki Enoki

    研究成果: Article査読

    9 被引用数 (Scopus)

    抄録

    Single molecular magnets and single-particle magnets have been intensively investigated from the viewpoints of spintronics devices. We employ the giant magnetic moment effect on magnetic impurities embedded in Pd in designing a single-nanoparticle magnet. A transition metal magnetic impurity such as Co has a giant magnetic moment in Pd metal due to the exchange enhancement effect. As the interaction range of the effect is ca. 1 nm from the magnetic impurity center, all Pd atoms are spin-polarized in a Pd nanoparticle having a radius smaller than the range. Here, we unveil this feature experimentally and show that a Pd nanoparticle containing only one Co atom exhibits a single-domain nanomagnet behavior with a blocking temperature of 3K.

    本文言語English
    論文番号103701
    ジャーナルjournal of the physical society of japan
    77
    10
    DOI
    出版ステータスPublished - 2008 10

    ASJC Scopus subject areas

    • 物理学および天文学(全般)

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