Abstract
The concentration and temperature dependences of coercive force have been studied on Fe-Sm and other Fe-rare earth (R)a morphous alloys prepared by sputtering. The coercive force of Fe-Sm amorphous alloys shows a large concentration dependence as expected from the random anisotropy model. The temperature dependence of coercive force shows a linear relationship between log Hc and T, and it is composed of two straight lines in the ferrimagneticlike amorphous alloys. The magnitude of coercive force of Fe66.7R33,3 amorphous alloys depends on the second order electrostatic field except for that of Fe-Ce.
