Measurement of the nucleation and domain depinning field in a single Co/Pt multilayer dot by anomalous Hall effect

M.Y. Delalande, Jeroen de Vries, Leon Abelmann, J.C. Lodder

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    17 Citations (Scopus)

    Abstract

    Co/Pt multilayer dots with perpendicular anisotropy and with diameters of 250 and 350 nm were fabricated on top of a Hall cross configuration. The angular dependence of the magnetic reversal of the individual dot was investigated by Anomalous Hall effect measurements. At near in-plane angles (85° with the magnetic easy axis) the dot switches partially into a stable two-domain state. This allows for separate analysis of the angular dependence of both the field required for nucleation of a reversed domain, and the field required for depinning of the domain wall. The angular dependence of the depinning field fits accurately to a 1/cos(θ) behavior, whereas the angular dependence of the nucleation field shows a minimum close to 45°. The latter dependency can be accurately fitted to the modified Kondorsky model proposed by Schumacher [1] F. Schumacher. Journal of Applied Physics, 70 (1991), p. 3184. | View Record in Scopus | | Full Text via CrossRef | Cited By in Scopus (5)[1].
    Original languageUndefined
    Pages (from-to)1277-1280
    Number of pages4
    JournalJournal of magnetism and magnetic materials
    Volume09
    Issue number037
    DOIs
    Publication statusPublished - Apr 2012

    Keywords

    • TST-uSPAM: micro Scanning Probe Array Memory
    • Magnetic data storage
    • METIS-281638
    • TSTNE-Magnet-AHE: Anomalous Hall Effect
    • TST-SMI: Formerly in EWI-SMI
    • IR-79003
    • Anomalous Hall Effect
    • EWI-20993
    • Domain nucleation

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