{"title":"铁磁金属玻璃磁导率的快速耗散和扩散弛豫","authors":"P. Allia , C. Beatrice , F. Vinai","doi":"10.1016/0025-5416(88)90284-4","DOIUrl":null,"url":null,"abstract":"<div><p>A strong relaxation of the a.c. magnetic permeability is observed in amorphous ferromagnets at very short times (<em>t</em> < 10<sup>−2</sup><em>s</em>) after impulse demagnetization. Such a relaxation is shown to be composed of two contributions of different natures and characteristics; a change in the energy dissipated by the oscillating domain walls, and a much smaller diffusive after-effect, similar to that usually observed at longer times after demagnetization. A method to observe this second contribution is proposed and discussed.</p></div>","PeriodicalId":100890,"journal":{"name":"Materials Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"1988-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0025-5416(88)90284-4","citationCount":"2","resultStr":"{\"title\":\"Fast dissipative and diffusional relaxation of the magnetic permeability in ferromagnetic metallic glasses\",\"authors\":\"P. Allia , C. Beatrice , F. Vinai\",\"doi\":\"10.1016/0025-5416(88)90284-4\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>A strong relaxation of the a.c. magnetic permeability is observed in amorphous ferromagnets at very short times (<em>t</em> < 10<sup>−2</sup><em>s</em>) after impulse demagnetization. Such a relaxation is shown to be composed of two contributions of different natures and characteristics; a change in the energy dissipated by the oscillating domain walls, and a much smaller diffusive after-effect, similar to that usually observed at longer times after demagnetization. A method to observe this second contribution is proposed and discussed.</p></div>\",\"PeriodicalId\":100890,\"journal\":{\"name\":\"Materials Science and Engineering\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1988-03-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/0025-5416(88)90284-4\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Materials Science and Engineering\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/0025541688902844\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Science and Engineering","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0025541688902844","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Fast dissipative and diffusional relaxation of the magnetic permeability in ferromagnetic metallic glasses
A strong relaxation of the a.c. magnetic permeability is observed in amorphous ferromagnets at very short times (t < 10−2s) after impulse demagnetization. Such a relaxation is shown to be composed of two contributions of different natures and characteristics; a change in the energy dissipated by the oscillating domain walls, and a much smaller diffusive after-effect, similar to that usually observed at longer times after demagnetization. A method to observe this second contribution is proposed and discussed.
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