Abstract
The magnetic behaviours of grain-oriented, non-oriented and rapidly quenched iron-silicon alloys are modeled according two analytical models. The first one (Wong's model) describes the variations of the induction B as a fraction of ( H ± H c). The second (Gonda's model) defines the B behaviour as an exponential function of ( H ± H c). The fit characterized by the difference between experimental and analytical hysteresis loops, has been investigated as a function of maximum induction and frequency. According to the material grade, the domain validity of each model is defined.
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