Magnetic Losses in Soft Ferrites

We review the basic phenomenology of magnetic losses from DC to 1 GHz in commercial and laboratory-prepared soft ferrites considering recent concepts regarding their physical interpretation. This is based, on one hand, identification contributions magnetization process provided by spin rotations domain walls and, other concept loss separation. It additionally contemplates a distinction between involved microscopic dissipation mechanisms: damping eddy currents. Selected experimental results broadband behavior complex permeability Mn-Zn provide significant examples dependence sintering methods, solute elements, working temperature. also highlight peculiar frequency temperature response Ni-Zn ferrites, which can be heavily affected aftereffects. The modeling brings light role anisotropy way its magnitude distribution, internal demagnetizing fields, acts upon frequency. shown that effective governs interplay wall rotational processes distinctive mechanisms, whose are recognized terms different components.