Physics of Composites for Low-Frequency Magnetoelectric Devices

Sensors (Basel). 2022 Jun 25;22(13):4818. doi: 10.3390/s22134818.

Abstract

The article discusses the physical foundations of the application of the linear magnetoelectric (ME) effect in composites for devices in the low-frequency range, including the electromechanical resonance (EMR) region. The main theoretical expressions for the ME voltage coefficients in the case of a symmetric and asymmetric composite structure in the quasi-static and resonant modes are given. The area of EMR considered here includes longitudinal, bending, longitudinal shear, and torsional modes. Explanations are given for finding the main resonant frequencies of the modes under study. Comparison of theory and experimental results for some composites is given.

Keywords: electromechanical resonance; magnetoelectric composite; magnetoelectric effect; magnetoelectric voltage coefficient; resonance mode.

Grants and funding

The work was supported by the Russian Science Foundation (projects no. 22-29-00950 and no. 22-25-20224).