Dynamics of the Remagnetization Process in the Rapidly Quenched FeCuNbSiB Alloys

The analysis of the power spectra of Barkhausen noise is applied to the study of the influence of heat treatment on the remagnetization process in rapidly quenched FeCuNbSiB alloys. It has been shown that the mobility of the domain wall changes after annealing towards to lower values. Measurements were performed on samples of amorphous Fe sub 73.5 Cu 1 sub Nb 3 sub Si sub 13.5 B sub 9 prepared by spinning wheel technique.