Journal of the Magnetics Society of Japan
Online ISSN : 1882-2932
Print ISSN : 1882-2924
Contributed Paper
Micromagnetic Simulation of Magnetic Particles with Surface Anisotropy
Lin YuanJianjun JiangGang DuZhongyou WangHuahui He
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JOURNALS OPEN ACCESS

2008 Volume 32 Issue 2_1 Pages 50-53

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Abstract

The resonance frequency of ferromagnetic particles with surface anisotropy was investigated by micromagnetic simulation. Two kinds of calculations were done: those with Aharoni surface anisotropy and those with Néel-Brown surface anisotropy. In Aharoni surface anisotropy, the relationship between the resonance frequency and particle size D was in agreement with Shilov's theory. In Néel-Brown surface anisotropy, the resonance frequency was proportional to 1/b, where b was the length of the short axis.

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© 2008 The Magnetics Society of Japan
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