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科学通报  2012 

高取向Tb0.3Dy0.7Fe1.9合金的制备

, PP. 2058-2061

Keywords: 磁致伸缩,凝固,静磁场,取向,易轴

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Abstract:

巨磁致伸缩材料Tb0.3Dy0.7Fe1.9沿易磁化轴取向有着远优于其他取向的性能,探索制备该合金沿取向的方法将提高这类稀土铁材料的应用价值.当材料在静磁场中凝固时,尽管Tb0.3Dy0.7Fe1.9的熔点远高于材料的铁磁相变Curie点,理论上这种高熔点的铁磁类材料在不是很强的静磁场作用下有实现易轴取向生长的可能性.在Tb0.3Dy0.7Fe1.9的凝固实验中,施加1T的静磁场,材料在慢凝的过程中获得了平行于磁场方向的高取向.实验结果证实了理论分析,这一方法也应适用于其他高熔点铁磁性材料.

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