Authors present a nem static hysteresis model for magnetic materials based
on physical meaning, The idea is original: electronic transformation of the
material is compared to a chemical reaction. Then a simple analytic formul
ation of the B(H) law for GO iron sheet in rolling direction is obtained, R
esults are compared with measurements. The model is as simple as the Potter
's one, its parameters can be easily determined and its accuracy could comp
ete with Preisach model. Finally an easy computation by finite element soft
ware is gained.