Giant magnetostriction on Fe85Ga15 stacked ribbon samples
Giant magnetostriction on Fe85Ga15 stacked ribbon samples
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DOI：
10.1063/1.1688452
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发表时间：
2004-03
影响因子：
4
通讯作者：
Guole Liu;Liyan Liu;Z. H. Liu;M. Zhang;Jinglan Chen;Jianqi Li;Guangheng Wu;Yangxiang Li
中科院分区：
文献类型：
--
作者：
Guole Liu;Liyan Liu;Z. H. Liu;M. Zhang;Jinglan Chen;Jianqi Li;Guangheng Wu;Yangxiang Li
在我们的堆叠Fe 85 Ga 15带样品中，在不同方向上获得了-1300和+1100 ppm的大磁致伸缩。在非180°畴磁化的情况下，磁致伸缩主要归因于Ga团簇的存在，Ga团簇由于带状晶粒织构而优先沿带状法线取向。Ga-Ga原子对分布在基体中，形成修正的DO 3结构，并引起快淬薄带的X射线衍射峰分裂。作为一种特殊的微观形貌，实验上还观察到了Ga团簇高度凝聚在一些纳米尺度的点中。
Large magnetostrictions of −1300 and +1100 ppm related in the different directions have been obtained in our stacked Fe85Ga15 ribbon samples. In the case of non-180° domain magnetization in the high anisotropic samples, the magnetostrictions are mainly attributed to the existence of Ga clusters which preferentially orient with the ribbon normal due to the ribbon grain texturing. Forming the modified DO3 structure, the Ga–Ga atom pairs distribute in the matrix and cause the x-ray diffraction peak split in melt-spun ribbons. As a special micromorphology, Ga clusters highly condensed in some nanoscale dots have also been experimentally observed.