Anisotropy magnetocrystalline, total

It is well known that ferromagnetic resonance (FMR) is a sensitive tool to study the local fields. In fine-particle systems, as the different contributions to the total anisotropy (magnetocrystalline, magnetostatic, surface, shape, interparticle interactions) induce local fields, FMR experiments allow one to obtain information on the anisotropy energy and on the distribution of easy axes. 

The physical basis of the use of Fe— Si alloys, commonly called silicon steels, as soft magnetic materials is the fact that both the magnetocrystalline anisotropy isTi and the magnetostriction parameters >.100 and Xm of Fe approach zero with increasing Si content (see Fig. 4.3-5a). The lower the magnitude of these two intrinsic magnetic properties is, the lower are the coercivity He and the AC magnetic losses The total losses ppe consist of the static hysteresis losses p y and the dynamic eddy current losses pw which may be subdivided into a classical p c and an anomalous p eddy current loss term. 

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