J. Gonzalez et al., INFLUENCE OF CU AND TA ON THE STRESS-INDUCED ANISOTROPY IN FESIB AMORPHOUS RIBBONS, IEEE transactions on magnetics, 31(6), 1995, pp. 3781-3783
We have studied the effect of the Cu and Ta additions on the induction
of magnetic anisotropies in FeSiB melt spun amorphous ribbons. The in
duction process was performed by using the current annealing technique
with (and without) the simultaneous application of a longitudinal (pa
rallel to the ribbon axis) tensile stress. We observed that when low i
ntensities are used during the induction process the resulting anisotr
opy has a longitudinal easy axis. On the contrary, when the induction
treatment is carried out by making flow through the samples a high int
ensity current the resulting effective anisotropy is dominated by the
precipitation of crystallites corresponding to the first stage of the
crystallization process. We also observed that the treatments carried
out under tensile stress (stress anneals) produced in all the cases a
smaller induced anisotropy than those performed without that applied s
tress (stress-free anneals).