Dynamical properties of magnetization in FeSi Goss textured materials

Abstract The dynamical magnetization in ‘Hi-B’ Goss textured FeSi sheets is investigated theoretically. The spacing between domain walls is assumed to be large enough to avoid overlapping of eddy currents and a z-shaped landscape experienced by walls is proposed. Simple expressions valid in the range 100–1000 Hz are derived for the loss per cycle P / f and dynamical permeability μ under triangular field wave. Comparison with fluxmetric measurements allows the landscape hardness field H c and number of moving walls n to be determined.