非磁性替代原子对Ce_2Co_(17)居里温度和饱和磁化强度的影响

Influence of Non-Magnetic Substitution Atoms on Curie Temperature and Spontaneous Magnetisation of Ce_2Co_(17) Compounds

用真空电弧熔炼法制备了Ce2 Co17-xMx(M =Ga ,Al和Si)化合物。通过X射线衍射和磁性测量手段 ,研究了非磁性替代原子Ga,Al和Si的加入对Ce2 Co17化合物的居里温度和饱和磁化强度的影响 ,其中Si在Ce2 Co17化合物中的固溶度最小 ,并使居里温度和饱和磁化强度下降幅度最大。

Ce 2Co 17- x M x (M=Ga, Al and Si) compounds were prepared by arc melting. The influence of non magnetic substitution atoms, such as Ga, Al and Si, on Curie temperature and spontaneous magnetisation of these compounds were studied by means of X ray diffraction and magnetic measurements. The experimental results reveal that Si has a minimal solid solubility in Ce 2Co 17 , and makes a strongest reduce of Curie temperature and spontaneous magnetisation comparing with Ga and Si.