Voltage-Driven Nonlinearity in Magnetoelectric Heterostructures

Abstract

While the magnetoelectric (ME) resonator is promising for magnetometers, very low-frequency and miniaturized antennas, and energy harvesters, devices based on the converse ME effect in amorphous Metglas alloy face frequency-response nonlinearity issues under high vibrational amplitude. This study aims to resolve this nonlinearity issue, by addressing the dependence of nonlinearity on bias field, driving voltage, mechanical quality factor, and frequency-sweep direction. With magnetic field as a control variable, the effects of nonlinear behavior on a ME antenna's communication distance, bandwidth, and modulation are also presented.