Micromagnetic evaluation of magnetostatic interactions distribution in structured particulate media

A complex analysis of magnetostatic interactions in particulate media is performed by means of a micromagnetic model. The properties of the interaction field distribution are presented for the case of structured two-dimensional media. The vector properties of the interaction field distribution are also analyzed. The hypothesis concerning interactions in scalar Preisach-type models are validated while the same hypothesis used in vector Preisach models are not entirely in agreement with the physical reality in particulate media. (C) 2001 American Institute of Physics.