ABSTRACT
The magneto-elasto-electric equivalent circuits for L-L, L-T, and T-T modes were developed. The proposed equivalent circuit method is quite useful for both static and dynamic analysis of magnetoelectric (ME) laminates, especially for electromechanical resonance analysis. The equivalent circuit method predicts that ME coupling in ME laminates is strongly related to their working modes: the value of ME voltage coefficients in L-T or L-L modes is significantly higher relative to the T-T. Another critical predictions are that there is an optimum thickness ratio of piezoelectric and magnetostrictive layers that maximizes ME coefficients and resonance ME voltage coefficient is ~Qm times higher under resonance drive. These predictions have been confirmed by experimental results.
