Influence of Magnetostriction of the Magnetization Reversal of Amorphous Wires

Abstract

Some aspects of the magnetization process of amorphous wires have been analysed. Magnetoelastic coupling between magnetization and stresses developed during rapid quenching is the origin of an inhomogeneous magnetic anisotropy. It is shown that such inhomogeneous distribution of the anisotropy strength combined with the cylindrical geometry governs the main features of the process. A micromagnetic study on the energy involved in the magnetization reversal has been carried out. In order to analyze the effect of the inhomogeneous anisotropy on both wall energy and wall thickness we have considered an idealized infinitely long wire.