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系统研究了室温和 77K温度时Tb0 3Dy0 7(Fe1 -xAlx) 1 95(x =0 ,0 0 5 ,0 1,0 15 ,0 2 ,0 2 5 ,0 3,0 35 )合金中金属Al替代Fe对自旋重取向和穆斯堡尔谱的影响 .结果发现 ,Tb0 3Dy0 7(Fe1 -xAlx) 1 95合金的易磁化方向随成分和温度在{ 110 }面逐渐偏离了立方晶体的主对称轴 ,即自旋重取向 .室温下 ,当x =0 15时 ,Tb0 3Dy0 7(Fe1 -xAlx) 1 95合金中出现了少量非磁性相 ;x>0 15时 ,合金完全呈顺磁性 ;而 77K温度下 ,x =0 2时合金仍然呈磁性相 .在室温和 77K温度时 ,超精细场Hhf均随Al元素的增加而减小 ,而同质异能移IS 随Al元素的增加而增加 ,四极劈裂QS 随Al含量呈无规律的变化 .
The effects of Al (subscript 1), Al (superscript 3 +) and Tb (subscript 3 +) in the alloys of Tb0O3y07 (Fe1-xAlx) 1 95 (x = 0,05,01,015,02,025,03,035) The results show that the easy magnetization direction of Tb0 3Dy0 7 (Fe1-xAlx) 1 95 alloy gradually deviates from the main crystal of the cubic crystal in the {110} plane with composition and temperature Symmetry axis, ie, spin reorientation. At room temperature, a small amount of non-magnetic phase appeared in Tb0N3yO7 (Fe1-xAlx) 1 95 alloy when x = 0 15 at room temperature and completely paramagnetic when x> 0 15. However, at 77K, the alloy is still in magnetic phase at x = 0 2, and the hyperfine field Hhf decreases with the increase of Al at room temperature and 77 K. However, with the increase of Al, Increase, quadrupole splitting QS with Al content showed irregular changes.