Attempt frequency of magnetization in nanomagnets with thin-film geometry

Hong Ju Suh, Changehoon Heo, Chun Yeol You, Woojin Kim, Taek Dong Lee, Kyoung Jin Lee

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Abstract

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 Néel-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.

Original languageEnglish
Article number064430
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume78
Issue number6
DOIs
Publication statusPublished - 2008 Aug 29

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ASJC Scopus subject areas

  • Condensed Matter Physics

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