Abstract

A theory of the magnetoelectric effect in three-layer asymmetric structures composed of a piezoelectric layer and two magnetostriction layers with opposite magnetostriction signs is presented. The thickness ratio of the layers is obtained, at which this effect is maximum. It is shown that the sign of the magnetoelectric coefficient changes to opposite (with respect to the initial two-layer structure) with an increase in the third-layer thickness. It is established that the magnetoelectric coefficients of the structures with different arrangements of the layers with positive and negative magnetostriction have opposite signs.

中文翻译：

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弯曲振动模式区域三层不对称结构的磁电效应

摘要

提出了由压电层和两个具有相反磁致伸缩符号的磁致伸缩层组成的三层不对称结构中的磁电效应的理论。获得该层的厚度比，在该厚度比处该效果最大。可以看出，随着第三层厚度的增加，磁电系数的符号变为相反的（相对于初始的两层结构）。已经确定，具有正磁致伸缩层和负磁致伸缩层的不同布置的结构的磁电系数具有相反的符号。