THERMOREMANENT PHENOMENA IN DISORDERED-SYSTEMS

In this paper the effect of particle interactions on the behaviour of the thermoremanent magnetisation (TRM) curve is examined. The variatio n of the TRM with cooling field is well known, and shows an anomalous peak rather than a monotonic increase to saturation. In this paper a m ean field approach and a Monte Carlo model are compared. The Monte Car lo calculations predict a peak in the TRM, which is a consequence of t he interaction field, whereas the mean field approach does not predict a peak.