Temperature dependence of asymmetric GMI profile

Abstract The giant magnetoimpedance (GMI) profiles have been measured as a function of measuring temperature from 300 down to 50 K for the Co-based amorphous ribbons annealed in vacuum (A-sample) and in open air (B-sample) under the annealing field of 3 Oe. The contribution of wall motion on GMI decreases more sensitively with the decreasing temperature than that of rotational magnetization in both samples. The asymmetry and hysteresis of the profiles for increasing and decreasing fields also decrease with the decreasing temperature.