PHYSICS AND MATHEMATICS

Low-frequency magnetoelectric effect in a two-layer magnetostrictive-piezoelectric structure

D. A. Filippov^a, V. M. Laletin^b, N. N. Poddubnaya^b, E. I. Nikitin^a, N. P. Kuznetsov<sup>a

a</sup> Yaroslav-the-Wise Novgorod State University
^b Institute of Technical Acoustics

Abstract: The study presents a theory of the magnetoelectric effect in a two-layer magnetostrictive and piezoelectric structure of magnetic and piezoelectric materials in the low-frequency region of the spectrum. Based on the solution of the equations of the theory of elasticity and electrostatics, a simple expression for the magnetoelectric stress coefficient is obtained via the physical parameters of the material and the geometric characteristics of the structure. The study examines the contribution to the value of the effect caused by flexion strain and planar deformations. It is shown that the contribution from planar deformations to the value of the effect significantly exceeds the value of the contribution from flexion strains. The authors demonstrate the calculation results for the nickel – lead zirconate titanate and permendur – lead zirconate titanate structures.

Keywords: composite multiferroics, magnetostriction, piezoelectricity, magnetoelectric effect, magnetoelectric coefficient.

DOI: 10.23670/IRJ.2021.105.3.001