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

Budi Purnama, Yukio Nozaki, Kimihide Matsuyama

研究成果: Article

12 引用 (Scopus)

抜粋

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.

元の言語English
ページ(範囲)2683-2685
ページ数3
ジャーナルJournal of Magnetism and Magnetic Materials
310
発行部数2 SUPPL. PART 3
DOI
出版物ステータスPublished - 2007 3 1
外部発表Yes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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