Effects of stress on the magnetic properties of the amorphous magnetic films

In this paper, a theoretical model has been established to study the contributions of the magnetization rotations to the magnetic properties of stressed amorphous magnetic films. The influences of both magnitude and direction of the applied stress on the magnetic properties have been discussed. The results show that the shapes of the hysteresis loops are significantly dependent on the applied stress. For amorphous magnetic film with positive magnetostriction, the longitudinal tensile stress can increase the coercivity but the remanence seems independent on the stress. Both the coercivity and remanence approach zero while the longitudinal compressive stress is large enough. The observed magnetostrictions of the amorphous magnetic films are influenced markedly by applied stress.