EXPERIMENTAL-STUDY AND THEORETICAL INTERPRETATION OF HYSTERESIS LOOPS AND HENKEL PLOTS IN SOFT-MAGNETIC MATERIALS

In this paper we discuss an application of the moving Preisach model (MPM) and the zero-temperature Sherrington-Kirkpatrick spin-glass model (SKM) to the interpretation of hysteresis phenomena in soft materials, with particular attention to the analogies and differences between the models. Both models are compared with hysteresis measurements performed on strips of amorphous Fe-B-Si alloy. We describe experimental data using the same distribution of local coercivities and interactions fields in both of them. The results confirm that the MPM is actually able to reproduce the hysteresis behavior of soft magnetic materials and can be useful to discuss the complicated behavior of the SKM, where we explicitly know the form of interactions.