Fabrication of oriented L10-FeCuPd and composite bcc-FeL1 0-FeCuPd nanoparticles: Alloy composition dependence of magnetic properties

Hiroshi Naganuma, Kazuhisa Sato, Yoshihiko Hirotsu

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    14 Citations (Scopus)

    Abstract

    Oriented and well-isolated L 10 -FeCuPd ternary alloy nanoparticles have been fabricated by electron-beam evaporation followed by postdeposition annealing. A single L 10 phase was formed in the FeCuPd nanoparticles with (Fe+Cu) content lower than 48 at. %. A strong preferential c -axis orientation along the film normal direction was achieved by Cu addition, which leads to a strong perpendicular magnetic anisotropy. Also, a lowering of the ordering temperature by 50 K compared to the binary L 10 -FePd nanoparticles was achieved by Cu addition. By contrast, composite particles composed of the bcc Fe and the L 10 -FeCuPd were formed when the (Fe+Cu) content was higher than 52 at. %. Coexistence of the bcc Fe and the L 10 -FeCuPd was confirmed by high-resolution transmission electron microscopy and nanobeam electron diffraction. It was found that perpendicular magnetic anisotropy of the L 10 -FeCuPd nanoparticles on the NaCl substrate is sensitive to the alloy composition.

    Original languageEnglish
    Article number08N706
    JournalJournal of Applied Physics
    Volume99
    Issue number8
    DOIs
    Publication statusPublished - 2006 May 25

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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