Tb_xDy_(1-x)Fe_(195)合金变温穆斯堡尔谱研究

STUDY ON MAGNETIZABLE DIRECTION OF Tb xDy 1-x Fe 1.95 BY MSSBAUER-EFFECT

通过对ＴｂｘＤｙ１－ ｘＦｅ１９５ 合金从低温到室温的穆斯堡尔谱的测量，发现易磁化方向有明显的改变。在ｘ ＝ ０２７ 时，发现在１７０ＫＴ ２３０Ｋ 时，易磁化方向为〔１００〕，在Ｔ２９３Ｋ时，易磁化方向为〔１１１〕，在Ｔ ＝ ２９３Ｋ 附近，发生了易磁化方向从〔１００〕到〔１１１〕的转变。对ｘ＝ ０３ 时，在７７ＫＴ ２３０Ｋ，易磁化方向为〔１００〕， Ｔ ２３０Ｋ 时，易磁化方向为〔１１１〕，转变温度在２３０Ｋ。这说明不同的ｘ 。

By mssbauer effect,we study the  Tb x Dy 1-x Fe 1.95  alloy from low temperature to room temperature and find that magnetizable direction has a remarkable change for x=0.27,the magnetizable direction is 〔100〕from 170K to 230K,it is 〔111〕 above 293K and the direction changes from 〔100〕to 〔111〕near 293K.For x=0.3,the magnetizable direction is 〔100〕from 77K to 230K,the direction is 〔111〕above 230K,the transition temperature is 230K.For different Tb/Dy,The transition temperature of the magnetizable direction is different due to different composition ratio of Tb to Dy.