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巨磁致伸缩材料Tb0.3Dy0.7Fe1.9沿易磁化轴《111》取向有着远优于其他取向的性能,探索制备该合金沿《111》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《111》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.
Giant magnetostrictive material Tb0.3Dy0.7Fe1.9 along the easy axis “111” orientation has far better performance than other orientations to explore the preparation of the alloy along the “111” orientation method will increase the value of such rare earth iron materials Although the melting point of Tb0.3Dy0.7Fe1.9 is much higher than the Curie point of the ferromagnetic phase of the material when the material is solidified in the static magnetic field, in theory the high melting point ferromagnetic material is not very strong in the static magnetic field Under the action of the possibility of easy axis growth.In the solidification experiment of Tb0.3Dy0.7Fe1.9, a static magnetic field of 1T was applied and the material obtained a high “111” orientation parallel to the direction of the magnetic field during slow setting The experimental results confirm the theoretical analysis, this method should also be applied to other high melting point ferromagnetic materials.