Reversible and irreversible magnetization processes along DC hysteresis loops of Fe-based composite materials

The paper presents the proportions of the reversible and the irreversible magnetization processes along DC hysteresis loops of selected soft magnetic composite materials (Somaloy 700, also mixed with Vitrovac 6155 and Fe-phenolformaldehyde resin composites), obtained from the differential and the reversible permeability measurements. The magnetization reversal was described along minor hysteresis loops with different maximum inductions. The influence of ferromagnetic filler content, particle size distribution and ferromagnetic component type (selected) on the magnetization processes proportions was analysed, as well as the relations between these proportions and magnetic properties (coercive field, total energy losses and maximum permeability) were found.