Abstract
Energy loss in magnetic steels is generally taken to consist of two parts: static loss, associated with Barkhausen switching and assumed independent of drive frequency, and eddy current loss due to wall motion. Little effort has gone into analyzing the Barkhausen contribution. We consider a model of a magnetic sample in which the Barkhausen volumes are represented as a distribution of sites which reverse their moments at a uniform rate and only along a single axis. Using Green’s function the current distribution of symmetrically placed regions is determined subject to the boundary conditions of periodic bar domains in a thin sheet. In subsequent reports this is used to calculate losses.
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