COMPARISON BETWEEN VARIOUS HYSTERESIS MODELS AND EXPERIMENTAL-DATA

We propose a comparison between results predicted by 4 mathematical models of hysteresis and experimental data measured on a CoNiCr alloy for longitudinal recording. Two of those models are simple analytical formula and can be used in a first approach of the phenomena, but are deficient to model the behavior of minor loops. More sophisticated models are analysed the first assumes a differential equation between B and H, the other is derived from the Preisach model. We give some results showing that, for the material we studied, the latest model gives the best fitting to experimental data. © 1990 IEEE