Effect of high-frequency non-sinusoidal excitation on the magnetic moment deflection angular velocity of nanocrystalline alloys under saturation magnetization

Abstract

The purpose of this paper is to establish a three-dimensional model of nanocrystalline alloy at the mesoscopic scale based on G.Herzer's random anisotropy theory, and apply two non-sinusoidal excitations to the model. The magnetic moment deflection angular velocity w is defined, and the motion of the magnetic moment and the response to the applied magnetic field during the saturation magnetization of the material are explored from the micro level. The results show that for $\omega$, under the excitation of triangular wave, increasing the amplitude of magnetic field and the frequency of alternating magnetic field can all accelerate the magnetic moment deflection and shorten the time of magnetization to saturation. While, for the square wave, the change of the magnetic field frequency does not affect w.