Fabrication and nanostructure of oriented FePt particles

Bo Bian, David E. Laughlin, Kazuhisa Sato, Yoshihiko Hirotsu

    Research output: Contribution to journalConference articlepeer-review

    73 Citations (Scopus)

    Abstract

    Thin films of oriented tetragonal FePt particles separated by amorphous alumina have been fabricated by electron beam evaporation. The ordering of the FePt particles without coarsening can be tailored by annealing conditions. The value of coercivity of the annealed film reached as high as 4.4 kOe. The perpendicular magnetic coercivity of the annealed film was slightly larger than in-plane coercivity. Some of the tetragonal FePt particles were found to have {111} twins and stacking faults. From our high-resolution electron microscopy observations, it was determined that central region of the ordered FePt particles tended to have oaxis perpendicular to the film plane.

    Original languageEnglish
    Pages (from-to)6962-6964
    Number of pages3
    JournalJournal of Applied Physics
    Volume87
    Issue number9 III
    DOIs
    Publication statusPublished - 2000 May 1
    Event44th Annual Conference on Magnetism and Magnetic Materials - San Jose, CA, United States
    Duration: 1999 Nov 151999 Nov 18

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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