Angular Dependence of Coercivity in Sm2Fe17Cx Magnets

In the present paper, the angular dependence of coercivity for the Sm2Fe17Cx magnets has been investigated in detail. Our results indicate that the angular dependence of the coercivity depends strongly on the coercivity value of the sample. For the sample of low coercivity with short ball milling time, the coercivity increases at first, develops a peak and then decreases with increasing angle between the easy axis and the direction of the external field. In contrast, minimum coercivity behavior has been observed in the sample of larger coercivity with longer ball milling time.