Ferromagnetic enhancement in the clusters of Co-Pd magnetic nanoparticles induced by the formation of cross-linkage

Yoshikazu Ito, Kazuyuki Takai, Toshiaki Enoki

    研究成果: Article査読

    4 被引用数 (Scopus)

    抄録

    Co-Pd alloy nanoparticles with the surface modified with carboxylic acid functional groups are prepared to connect the nanoparticles with a cross-linkage of calcium ion (Ca2+). The morphology of the resulting nanoparticles can be controlled with the Ca2+ ion concentration. At diluted concentrations, a dimer structure is formed, in which constituent nanoparticles are coupled ferromagnetically with the aid of dipole-dipole interaction. At high concentrations, many nanoparticles are multiple-cross-linked, resulting in forming highly packed three-dimensional structures. The magnetization is strongly enhanced 8 times as large as that of pristine sample owing to dipolar ferromagnetism in the 3D structures.

    本文言語English
    ページ(範囲)8971-8975
    ページ数5
    ジャーナルJournal of Physical Chemistry C
    115
    18
    DOI
    出版ステータスPublished - 2011 5 12

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Energy(all)
    • Physical and Theoretical Chemistry
    • Surfaces, Coatings and Films

    フィンガープリント 「Ferromagnetic enhancement in the clusters of Co-Pd magnetic nanoparticles induced by the formation of cross-linkage」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

    引用スタイル