化合物Y_(1-x)Pr_xCo_5和Y_(1-x)Sm_xCo_5的磁性分析

On the Magnetic Properties of Compounds Y_(1-x)Pr_xCo_5 and Y_(1-x)Sm_xCo_5

用改进的哈密顿,通过参数拟合法对稀土化合物Y_(1-x)Pr_xCo_5和Y_(1-x)Sm_xCo_5的磁化曲线、自发磁化曲线及易磁化方向随温度的变化曲线进行了分析.计算结果与实验符合较好,并得到了较为合理的Y_(1-x)Pr_xCo_5二阶晶场参量数值.

The magnetization M(H), the spontaneous magnetization M(T), and the cone angle θc (T) between the easy direction of magnetization and the c axis of rare earth compounds Y1-xPrxCo5 and Y1-xSmxCo5 are studied by means of the improved Hamiltonian. The calculated results are in agreement with the experimental M(H),M(T) and θc(T), and the calculated result of second order crystal field parameter A20 for the compounds Y1-xPrxCo5 is improved.