Structural and magnetic model of self-assembled FePt nanoparticle arrays

T. Thomson, M. F. Toney, S. Raoux, S. L. Lee, S. Sun, C. B. Murray, B. D. Terris

    Research output: Contribution to journalArticlepeer-review


    X-ray diffraction, small angle neutron scattering, and magnetometry were used to investigate chemically ordered, self-assembled FePt nanoparticle arrays with high magnetic anisotropy. Thin assemblies of polyethylenimine (PEI) and 4 nm Fe 58Pt 42 nanoparticles were analyzed. A metallic magnetic core surrounded by a weakly magnetic or nonmagnetic shell resulted from annealing FePt nanoparticles in the PEI-FePt assembly. The L1 0 chemical ordering and FePt nanoparticles having high coercivity were derived from high temperature annealing.
    Original languageEnglish
    Pages (from-to)1197-1201
    Number of pages4
    JournalJournal of Applied Physics
    Issue number2
    Publication statusPublished - 15 Jul 2004


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