Micromagnetic evaluation of statistical and mean-field interactions in particulate ferromagnetic media

Samples with Stoner-Wohlfarth Ferromagnetic particles interacting only thro ugh dipolar magnetostatic fields were computer generated and the effects of the interactions on the magnetisation processes have been analysed. In som e geometrical configurations of the particles, magnetostatic mean-field int eraction field was also obtained, in agreement with the usual assumption in the moving Preisach model. A micromagnetic analysis of the magnetostatic m ean interaction field is made. Classical DeltaM and integral generalised De ltaM curves have been calculated and the results have been analysed. (C) 20 01 Elsevier Science B.V. All rights reserved.