MAGNETIZATION PROCESSES IN SAMPLES WITH MODULATED ANISOTROPY

We have induced a helical anisotropy distribution by current annealing , in low-magnetostriction amorphous ribbons, In these samples the anis otropy direction rotates 180 degrees continuously from one surface of the ribbon to the other, In this paper we report a theoretical and exp erimental study showing chirality conservation during the magnetizatio n process in these samples. The chirality conservation implies that th e sign of magetization chirality must be the same as the anisotropy on e, This restriction controls the magnetization processes producing lar ge Barkhausen discontinuities.