Amplification of even harmonics in nonlinear magnetoimpedance response of amorphous wires in presence of longitudinal alternating magnetic field

摘要

A model to describe the influence of longitudinal alternating magnetic field on the nonlinear magnetoimpedance in amorphous wires is proposed. The appearance of even harmonics in the voltage response is shown to arise from the asymmetry in the magnetization reversal process in the wire due to the presence of the longitudinal alternating field. The behavior of even harmonics is analyzed as a function of the external field, alternating field amplitude and current amplitude.