Extraction of hysteresis loops from main magnetization curves

In firm catalogues,the basic properties of magnetic materials are often described by their main magnetization curves. Such curves may be used for the first analysis of circuits containing ferromagnetic cores. The analysis will be more accurate, if the curves are transformed into the families of hysteresis loops. To enable the reconstruction of such loops, we formulate a simple model of hysteresis, making main magnetization curve directly dependent on coercivity. In this way we can approximate hysteresis loops of most typical materials in a pretty wide range of magnetization. Application of variable coercivity enables extension of the model to stronger fields.