Micromagnetic simulations of absoption spectra

被引：20

作者：

Rivkin, K. ^{[1
]}

Ketterson, J. B.

机构：

[1] Northwestern Univ, Dept Phys & Astron, Evanston, IL 60201 USA

[2] Northwestern Univ, Dept Elect & Comp Engn, Evanston, IL 60201 USA

[3] Northwestern Univ, Mat Res Ctr, Evanston, IL 60201 USA

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2006年 / 306卷 / 02期

基金：

美国国家科学基金会;

关键词：

spin waves; micromagnetic modelling; magnetic vortex; magnetic nanostructures;

D O I：

10.1016/j.jmmm.2006.02.245

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Further development of a previously introduced method for numerically simulating magnetic spin waves is presented. Together with significant improvements in speed, the method now allows one to calculate the energy absorbed by the various modes excited by a position- and time-dependent H-1 field in a ferromagnetic body of arbitrary shape in the presence of a (uniform or non-uniform) static H-0 field as well as the internal exchange and anisotropy fields. The method is applied to the case of the single vortex state in a thin disc, a ring, and various square slabs, for which the absorption spectra are calculated and the most strongly excited resonance modes are identified. (C) 2006 Published by Elsevier B.V.

引用

页码：204 / 210

页数：7

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