Magnetic properties of Fe-Pd alloy nanoparticles

Yoshikazu Ito, Akira Miyazaki, Suresh Valiyaveettil, Toshiaki Enoki

    Research output: Contribution to journalArticlepeer-review

    16 Citations (Scopus)

    Abstract

    Pd nanoparticles (2 nm in diameter) containing magnetic Fe atoms are prepared and their magnetic properties are investigated. The magnetic moment of the particles is enhanced in the low Fe concentration region and takes a maximum value of 7.6 μB per Fe atom at the concentration in which each Pd nanoparticle contains one Fe atom on average. This giant magnetic moment is explained in terms of the spin polarization on Pd atoms caused by the exchange enhancement mechanism. The magnetization curve shows that these Fe-Pd alloy nanoparticles exhibit superparamagnetic behavior, although no blocking behavior in the temperature dependence of the magnetic susceptibility was observed due to the small magnetic anisotropy of Fe.

    Original languageEnglish
    Pages (from-to)11699-11702
    Number of pages4
    JournalJournal of Physical Chemistry C
    Volume114
    Issue number27
    DOIs
    Publication statusPublished - 2010 Jul 15

    ASJC Scopus subject areas

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

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