Attempt frequency of magnetization in nanomagnets with thin-film geometry

Hong Ju Suh; Changehoon Heo; Chun Yeol You; Woojin Kim; Taek Dong Lee; Kyung Jin Lee

doi:10.1103/PhysRevB.78.064430

Attempt frequency of magnetization in nanomagnets with thin-film geometry

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

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

25 Citations (Scopus)

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 language	English
Article number	064430
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	78
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevB.78.064430
Publication status	Published - 2008 Aug 29

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.78.064430

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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 N{\'e}el-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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AU - Suh, Hong Ju

AU - Heo, Changehoon

AU - You, Chun Yeol

AU - Kim, Woojin

AU - Lee, Taek Dong

AU - Lee, Kyung Jin

PY - 2008/8/29

Y1 - 2008/8/29

N2 - 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.

AB - 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.

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JO - Physical Review B - Condensed Matter and Materials Physics

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Attempt frequency of magnetization in nanomagnets with thin-film geometry

Abstract

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