Interpretation of the Hopkinson Secondary Maximum in Terms of Parallel Pumping Theory

Some former measurements are reviewed concerning a secondary maximum occurring at the high-temperature side of the usual Hopkinson peak if a dc-magnetic field is superimposed parallel to the ac-field. Since, with regard to singledomain particles embedded in a paramagnetic matrix, the measuring signal is proportional to the high-frequency losses, a secondary maximum indicates some kind of resonance phenomenon which obviously fulfills the geometrical conditions of parallel pumping experiments. It is shown that all other aspects of the experimental results also can be explained sufficiently if being interpreted in terms of parallel pumping theory.