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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.

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The microwave permeability of multi-layered Fe films is under study. The multilayer films are found to possess more rigid magnetic structure and larger damping factor of ferromagnetic resonance compared to those of single-layer films. Bulk materials with high microwave permeability may be produced as laminated structures of these multi-layer ferromagnetic films. In the paper, experimental data are presented on the microwave permeability of such laminated regular structures based on Fe films. Possible technical applications of the materials under study include thin wideband radar absorbers and miniaturized patch antennas.

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