Toward a better understanding of magnetic screening in multidomain grains

Abstract

Stable moments associated with pinned walls in a multidomain (MD) grain can be screened by regions in which walls are free to move. This screening problem is investigated by using a new approximation method that linearizes the demagnetizing field acting on individual domain walls in a grain. The approximation is shown to be usually excellent by comparing results obtained from it to more precise numerical solutions. -from Authors