{"title":"钆中的磁阻尼","authors":"C. Burdett, R. B. Layng","doi":"10.1088/0508-3443/18/11/306","DOIUrl":null,"url":null,"abstract":"The variation of internal friction with strain amplitude at temperatures of 115, 168, 215, 245 and 298°K has been measured using a torsional pendulum at a frequency of 1 c/s. The damping with a magnetic origin has been separated from the total damping by a method due to Granato and Lucke, and the results have been explained in terms of the irreversible movement of 90° domain boundaries. A simple analysis using domain theory predicts a relation between the stress at peak damping and the magnetic field at maximum susceptibility. For gadolinium this field is 006 Oe at 245°K. A simple treatment of the variation of peak damping with temperature shows qualitative agreement with the results.","PeriodicalId":9350,"journal":{"name":"British Journal of Applied Physics","volume":"78 1","pages":"1551-1557"},"PeriodicalIF":0.0000,"publicationDate":"1967-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"11","resultStr":"{\"title\":\"Magnetic damping in gadolinium\",\"authors\":\"C. Burdett, R. B. Layng\",\"doi\":\"10.1088/0508-3443/18/11/306\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The variation of internal friction with strain amplitude at temperatures of 115, 168, 215, 245 and 298°K has been measured using a torsional pendulum at a frequency of 1 c/s. The damping with a magnetic origin has been separated from the total damping by a method due to Granato and Lucke, and the results have been explained in terms of the irreversible movement of 90° domain boundaries. A simple analysis using domain theory predicts a relation between the stress at peak damping and the magnetic field at maximum susceptibility. For gadolinium this field is 006 Oe at 245°K. A simple treatment of the variation of peak damping with temperature shows qualitative agreement with the results.\",\"PeriodicalId\":9350,\"journal\":{\"name\":\"British Journal of Applied Physics\",\"volume\":\"78 1\",\"pages\":\"1551-1557\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1967-11-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"11\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"British Journal of Applied Physics\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1088/0508-3443/18/11/306\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"British Journal of Applied Physics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1088/0508-3443/18/11/306","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
The variation of internal friction with strain amplitude at temperatures of 115, 168, 215, 245 and 298°K has been measured using a torsional pendulum at a frequency of 1 c/s. The damping with a magnetic origin has been separated from the total damping by a method due to Granato and Lucke, and the results have been explained in terms of the irreversible movement of 90° domain boundaries. A simple analysis using domain theory predicts a relation between the stress at peak damping and the magnetic field at maximum susceptibility. For gadolinium this field is 006 Oe at 245°K. A simple treatment of the variation of peak damping with temperature shows qualitative agreement with the results.
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