A. Hütten , J. Bernardi , S. Friedrichs , G. Thomas , Lluis Balcells
{"title":"Microstructural influence on magnetic properties and giant magnetoresistance of melt-spun gold-cobalt","authors":"A. Hütten , J. Bernardi , S. Friedrichs , G. Thomas , Lluis Balcells","doi":"10.1016/0956-716X(95)00401-G","DOIUrl":null,"url":null,"abstract":"<div><p>Microstructural influence on saturation magnetization, remanence, coercivity and giant magnetoresistance (GMR) of melt-spun Au<sub>1−x</sub>-Co<sub>x</sub>, (x = 0.65 and 0.284) ribbons in the as-quenched state and subsequently annealed at 480 °C has been investigated using analytical transmission electron microscopy. The evolution of the magnetic data with annealing time was found to be determined by the sequence of the formation of Co precipitates, their volume fraction, their particle size distribution and their morphology. GMR behavior was only measured for Au<sub>73.6</sub>Co<sub>28.4</sub> and is clearly caused by a lamellar eutectic with a structure similar to multilayers.</p></div>","PeriodicalId":101150,"journal":{"name":"Scripta Metallurgica et Materialia","volume":"33 10","pages":"Pages 1647-1666"},"PeriodicalIF":0.0000,"publicationDate":"1995-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0956-716X(95)00401-G","citationCount":"26","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Scripta Metallurgica et Materialia","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0956716X9500401G","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 26
Abstract
Microstructural influence on saturation magnetization, remanence, coercivity and giant magnetoresistance (GMR) of melt-spun Au1−x-Cox, (x = 0.65 and 0.284) ribbons in the as-quenched state and subsequently annealed at 480 °C has been investigated using analytical transmission electron microscopy. The evolution of the magnetic data with annealing time was found to be determined by the sequence of the formation of Co precipitates, their volume fraction, their particle size distribution and their morphology. GMR behavior was only measured for Au73.6Co28.4 and is clearly caused by a lamellar eutectic with a structure similar to multilayers.
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