{"title":"Magnetic field dependence of 600 MHz SAW velocity changes for thin Ni films","authors":"D. Walikainen, R. Wiegert, M. Levy","doi":"10.1109/ULTSYM.1988.49389","DOIUrl":null,"url":null,"abstract":"The authors derive an expression for the change in SAW (surface acoustic wave) velocity as a function of in-plane magnetic field for thin magnetostrictive films, which compares well with the data for thin Ni films. The proposed dynamic model is based on describing the films' in-plane magnetization as being perturbed by the periodic magnetostrictive induced change in the anisotropy field. The dissipation is phenomenologically accounted for by the Gilbert equation. It is shown that the attenuation and velocity changes have the same qualitative field dependence.<<ETX>>","PeriodicalId":263198,"journal":{"name":"IEEE 1988 Ultrasonics Symposium Proceedings.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1988-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE 1988 Ultrasonics Symposium Proceedings.","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ULTSYM.1988.49389","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
Abstract
The authors derive an expression for the change in SAW (surface acoustic wave) velocity as a function of in-plane magnetic field for thin magnetostrictive films, which compares well with the data for thin Ni films. The proposed dynamic model is based on describing the films' in-plane magnetization as being perturbed by the periodic magnetostrictive induced change in the anisotropy field. The dissipation is phenomenologically accounted for by the Gilbert equation. It is shown that the attenuation and velocity changes have the same qualitative field dependence.<>
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