Magnetic behaviour of a nanocrystallized Fe73Si15B8Nb3Cu1 alloy

The description of the behaviour of high-permeability FeCuNbSiB alloys requires first-order consideration, not only of the K1 fluctuation term, but also of the magnetoelastic energy. The magnitudes of these two components greatly vary with the structural state of the material. The behaviour of coercive field, Hc, as a function of these two energy terms is closely reproduced by an elliptical model.