微结构对熔纺金-钴合金磁性能和巨磁阻的影响

A. Hütten , J. Bernardi , S. Friedrichs , G. Thomas , Lluis Balcells
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引用次数: 26

摘要

采用透射电镜分析研究了熔化纺丝的Au1−x- cox (x = 0.65和0.284)带在淬火状态和随后在480℃退火时的显微组织对饱和磁化、剩余物、矫顽力和巨磁电阻(GMR)的影响。磁性数据随退火时间的变化与Co析出相的形成顺序、体积分数、粒度分布和形貌有关。仅测量了Au73.6Co28.4的GMR行为,并且明显是由具有类似多层结构的层状共晶引起的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Microstructural influence on magnetic properties and giant magnetoresistance of melt-spun gold-cobalt

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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