Remanence curves of longitudinal thin films

Abstract

A micromagnetic model has been developed which is applied to the calculation of the principal remanence curves of a longitudinal thin film. The isothermal remanent magnetization curve (IRM) relies on the production of a realistic erased state. The authors developed an approach based on simulated annealing which produces a highly correlated demagnetized state. Comparison between the two curves via the Wohlfarth relation shows that the interparticle interactions are predominantly negative in a dipolar coupled thin film, indicating that exchange coupling is necessary in order to explain previously published experimental data.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>