Attempt frequency of magnetization in nanomagnets with thin-film geometry

Details Attempt frequency of magnetization in nanomagnets with thin-film geometry Attempt frequency of magnetization in nanomagnets with thin-film geometry

2008-08-17

arxiv.org/abs/0808.2281v1

Physics

Condensed Matter

Materials Science

12 pages, 3 figures, PRB accepted

Scientific paper

10.1103/PhysRevB.78.064430

Solving the stochastic Landau-Lifshitz-Gilbert equation numerically, we investigate the effect of the potential landscape on the attempt frequency of magnetization in nanomagnets with the thin-film geometry. Numerical estimates of the attempt frequency are analyzed in comparison with theoretical predictions from the Fokker-Planck equation for the Neel-Brown model. It is found that for a nanomagnet with the thin-film geometry, theoretically predicted values for the universal case are in excellent agreement with numerical estimates.

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