Abstract
The effect of induced magnetic anisotropy on GMI has been studied in Co 71Fe 4B 15Si 10 melt spun amorphous ribbons, using two different techniques of thermomagnetic annealing. Quasi-static hysteresis loops were measured at controlled induction. From the quasi-static hysteresis loop evolution, the value of the macroscopic anisotropy K u induced by the field annealing treatment was determined. The evolution of the domain structure was observed using a Kerr-effect apparatus.
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