Magneto-Electric Effect Modeled in a Nonlinear Experiment

This letter presents a nonlinear model and experimental assessment of a magneto-electric (ME) device fabricated using a hexaferrite film and a spiral coil. In both the model and experiment, two sources are applied to the ME film and the spiral coil. The ME effect is modeled by two equation-based sources for generating the ME effect from the ME film to the spiral coil (and vice versa). A simple equivalent circuit model is used. In the nonlinear experiment, the two different sources are applied in a frequency range of 1-40 MHz. The voltage across the coil is measured as a function of the two sources with coupled frequencies and amplitude. In the simulation, the voltage on the spiral coil is a combination of the two sources modulated in the frequency domain; moreover, they are in agreement with experimental results showing that the output voltage of the spiral coil is a function of not only its direct source, but also the source on the ME film (so arising from the ME coupling). Between the experiment and simulation, the average amplitude difference is approximately 20%, whereas the resonance peaks are in agreement.