FIZIKA A 5 (1996) 3, 133-140

THE INFLUENCE OF DOMAIN STRUCTURE ON THE VARIATION OF COERCIVE FIELD AND MAXIMUM MAGNETIZATION OF Fe_77.5B_22.5 AMORPHOUS ALLOY

MARKO KOLANOVIĆ and DAMIR PAJIĆ
Department of Physics, Faculty of Science, P.O.Box 162, University of Zagreb, 10001 Zagreb, Croatia

Received 15 July 1996

The magnetic hysteresis of Fe_77.5B_22.5  amorphous ribbon has been studied by the induction method. The results for coercive field (H_c), maximum magnetization (M_m) and remanent magnetization (M_r) are explained by the twofold domain structure of amorphous alloys in form of ribbons. The analysis of the measurements shows that the inner domains are responsible for the magnetization up to about 65% saturation magnetization (M_s) and that the interaction between two domain structures plays an important role in enhanced increase of H_c  on M_m > 0.5  M_s. The frequency dependence of parameters of the hysteresis curve is briefly discussed.

UDC 539.213
PACS 75.50.Kj, 75.60.-d, 75.60.Ch

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