MODEL-CALCULATIONS OF THE STRESS DEPENDENCE OF SHAPE MAGNETOSTRICTION IN HOMOGENEOUS AMORPHOUS-ALLOYS

The constant A = dlambda /dsigma is calculated within the simple band model of one-ion magnetoelastic coupling in isotropic systems. Calculations are performed in the limit of a perfectly homogeneous system, where the problem can be solved analytically. Negative slope of lambda with stress is found for zero-magnetostrictive Co-rich amorphous alloy. However, A can be positive or negative for various magnetic alloys.