Dominance of resistive losses over hysteretic losses in ferromagnetic conductors

In the presence of ferromagnetic conductors, electromagnetic signal propagation might be seriously degraded through hysteretic losses. It is shown, however, that independent of frequency, such losses are always smaller than the ordinary resistive losses that would be calculated for a similarly resistive, equivalent paramagnetic material. This indicates that measurements of conductivity and permeability suffice to bound hysteretic losses, obviating the necessity for measurements of hysteresis at operating frequencies