Hysteresis Modelling and Coercivity Mechanisms in Hard Ferrites

Hysteresis modelling of hard ferrites is discussed, as well as the coercivity mechanisms. The effect of the crystallographic texture on the hysteresis shape is discussed. The coercivity is strongly affect by the grain size. The Stoner-Wohlfarth model provides the upper limit for the coercive force. Limitations of the Stoner-Wohlfarth model are discussed.