Anisotropy of Demagnetization

Abstract
The authors have measured the magnetization of a polycrystal of an iron‐like material in weak fields. They show that the Rayleigh coefficients a and b depend on the type of demagnetization used, and they give the angular dependence and field behaviour of a and b. A model is suggested to account for these results, which are discussed in terms of field evolution of several populations of Bloch walls.
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