Abstract
A theory is discussed for magnetoelectric (ME) interactions at electromechanical resonance in a heterogeneous ferromagnetic-piezoelectric three-layer structure. An expression has been obtained for the transverse ME coefficients αE,T as a function of interface coupling β between the layers. For 0<β<1, the theory predicts resonance enhancement of αE,T at two interrelated radial modes. As β is increased from 0, the low-frequency resonance occurs at progressively increasing frequency until it merges with the high-frequency mode when β=1. These predictions are in general agreement with representative data for a permendur-PZT-permendur trilayer composite.
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