Spin-wave resonance frequency in a ferromagnetic thin film

被引：10

作者：

Qiu, Rong-ke ^{[1
]}

Wang, Zhi-yong ^{[1
]}

Zhang, Zhi-dong ^{[2
,3
]}

机构：

[1] Shenyang Univ Technol, Shenyang 110870, Peoples R China

[2] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China

[3] Chinese Acad Sci, Int Ctr Mat Phys, Shenyang 110016, Peoples R China

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2013年 / 331卷

基金：

中国国家自然科学基金;

关键词：

Ferromagnetic thin film; Spin-wave resonance frequency; Surface and bulk anisotropy; Ferromagnetic thin film thickness; External magnetic field; Spin quantum number; MAGNETIC-ANISOTROPY; FERRITE; DEPENDENCE;

D O I：

10.1016/j.jmmm.2012.11.020

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The spin-wave resonance (SWR) frequency in a ferromagnetic thin film with single-ion surface and bulk anisotropies has been studied by using the linear spin-wave approximation and Green's function techniques. The effects of surface and bulk anisotropies, film thickness, spin quantum number, and external magnetic field on the SWR frequency have been investigated. It is found that the SWR frequencies all increase, as the external magnetic field, the bulk anisotropy, and the spin quantum number increase, respectively. The surface anisotropy affects strongly the SWR frequencies of the middle and low modes (except for the lowest one). With large bulk anisotropy, the surface anisotropy affects mainly the resonance frequency of the lowest spin-wave mode. As the film thickness decreases, the SWR frequency of the same mode increases. The present results direct the method to enhance and adjust the SWR frequency of ferromagnetic thin films. (C) 2012 Elsevier B.V All rights reserved.

引用

页码：92 / 97

页数：6

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