Some consequences of the analytical theory of the ferromagnetic hysteresis

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Abstract
Some properties of the transformations in the (J, H) plane of a ferromagnetic material are described. They are consequences of the Preisach model which considers the material as composed of independent elements of volume whose magnetic behaviour is wholly described by a rectangular loop, and assumes that the distribution of elemental loops, statistically independent of J and H, is a property of the material. The most interesting property concerns the determination of the region of the plane (J, H) where the magnetization curve can be found, once the loop is known, and the region where the loop can be found, once the magnetization curve is given. The coercive force of a symmetrical loop cannot be larger than the field strength corresponding to Jv/2 on the magnetization curve, Jv being the intensity of magnetization at the vertex of the loop

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