Oriented L10-FePt nanoparticles and their magnetic properties

K. Sato, B. Bian, T. Hanada, Y. Hirotsu

    Research output: Contribution to journalArticlepeer-review

    29 Citations (Scopus)

    Abstract

    The alloying reaction of Fe and Pt and the ordering reaction in nanometer-sized FePt particles was observed by in-situ TEM observation. At the initial stage of annealing, Fe started to dissolved into the Pt particles, then the ordering reaction started to occur simultaneously. These two reactions continued until all the Fe dissolved into the Pt during the annealing. The large magnetic coercivities as large as 815 kA/m were explained by the disappearance of the three-variants domains and the formation of crystallographic single domains.

    Original languageEnglish
    Pages (from-to)1389-1393
    Number of pages5
    JournalScripta Materialia
    Volume44
    Issue number8-9
    DOIs
    Publication statusPublished - 2001 May 18

    Keywords

    • Electron-beam deposition
    • Ferromagnetic hysteresis
    • Nanoparticles
    • Ordering
    • Transmission electron microscopy

    ASJC Scopus subject areas

    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering
    • Metals and Alloys

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