THE THEORY OF LINEAR AND NONLINEAR MAGNETOELECTRIC EFFECT IN LAYERED DISC–SHAPED MAGNETOSTRICTIVE- PIEZOELECTRIC COMPOSITES
Journal Title: Հայաստանի գիտությունների ազգային ակադեմիայի տեղեկագիր․ Մեխանիկա - Year 2017, Vol 70, Issue 3
Abstract
The theory of linear and nonlinear magnetoelectric effect in layered magnetostrictive-piezoelectric multiferroics is presented based on the joint solution of the equations of motion and constitutive relations for the magnetostrictive and piezoelectric subsystems, considering the boundary conditions on the interface. It is shown that, in weak bias magnetic fields, the value of nonlinear effect is comparable with linear, and along with the main resonance, there is an additional resonance. Value of the resonance amplitude is not dependent on bias magnetic field and is excited at the frequency of magnetic field twice less the main resonance frequency. Trilayer nickel–polymer–PZT–polymer-nickel disc-shaped structure is designed for the experiment. Frequency and field dependence of magnetoelectric effect is presented for this structure.
Authors and Affiliations
T. Galichyan, D. Filippov, G. Radchenko
Keywords
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