Micromagnetic simulation of thermally assisted magnetization reversal in magnetic nanodots with perpendicular anisotropy

Purnama, Budi and Nozaki, Yukio and Matsuyama, Kimihide (2007) Micromagnetic simulation of thermally assisted magnetization reversal in magnetic nanodots with perpendicular anisotropy. Journal of Magnetism and Magnetic Materials (310). pp. 2683-2685.

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    Abstract

    Temporal evolution of magnetization in a field cooling process from magnetic ordering temperature has been numerically investigated for magnetic nanodots with perpendicular anisotropy by solving the stochastic Landau–Lifshitz–Gilbert equation. The magnetic field required to align the magnetization, i.e. the switching field for thermally assisted writing of magnetic dot, depends on not only the intrinsic anisotropy field but also the magnetization reversal mechanism. To minimize the switching field with ensuring a practical thermal stability of the dot for nonvolatile memory applications, the lateral dimension of the dot should be smaller than its critical size for single domain configuration to avoid a formation of flux closure configuration inside the dot. Keywords: Numerical simulation; Nanodot magnetic; Perpendicular anisotropy; Thermally assisted; Magnetization reversal

    Item Type: Article
    Subjects: Q Science > QC Physics
    Divisions: Fakultas Matematika dan Ilmu Pengetahuan Alam > Fisika
    Depositing User: mr azis r
    Date Deposited: 23 May 2013 22:16
    Last Modified: 23 May 2013 22:16
    URI: https://eprints.uns.ac.id/id/eprint/867

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