Dynamical properties of magnetization in FeSi Goss textured materials

The dynamical magnetization in 'Hi-B' Goss textured FeSi sheets is investig ated theoretically. The spacing between domain walls is assumed to be large enough to avoid overlapping of eddy currents and a z-shaped landscape expe rienced by walls is proposed. Simple expressions valid in the range 100-100 0Hz are derived for the loss per cycle P/f and dynamical permeability mu un der triangular field wave. Comparison with fluxmetric measurements allows t he landscape hardness field H-c and number of moving walls n to be determin ed. (C) 2001 Elsevier Science B.V. All rights reserved.