MAGNETIZATION OF AMORPHOUS-ALLOYS BY ELASTIC STRAIN

The stress magnetization (SM) phenomenon in amorphous alloys under pul sed and periodic tension was studied. The dependence of SM on bias mag netic field and stress were obtained. Transverse magnetic annealing in creases the effect. The piezomagnetic constant has the same bias field dependence as the SM. To achieve the maximum SM, larger stresses and smaller fields are required for materials with low magnetostriction (< 10(-6)) than that for materials with high magnetostriction (approxima tely 30 x 10(-6)). At low fields the SM saturates by stress and achiev es magnitudes less than those predicted by a magnetization vector rota tion model. It is possible to explain the results by assuming a spatia l distribution of the spontaneous magnetization vectors. In a low magn etostriction alloy the transverse magnetic anisotropy is more uniform than that in a high magnetostriction alloy.