Abstract
The low frequency magneto-mechano-electric (MME) coupling behavior in the piezo-unimorph/magnet composites has been investigated. A theoretical model on the low frequency MME coupling behaviors for the piezo-unimorph/magnet composite was proposed. The experimental results coincided with the corresponding theoretical prediction and proved the validity of the theoretical model. Based on the theoretical model, the dependencies of the magnetoelectric voltage coefficients on the geometrical parameters of the piezo-unimorph/magnet composite were numerically calculated. The results show that there are optimal geometrical parameters of the piezo-unimorph/magnet composite for achieving maximum ME voltage coefficients. This research gives a theoretical basis to understand the low frequency MME coupling behaviors in the piezo-unimorph/magnet composite and provides a theoretical approach for optimal design of MME devices based on this configuration.
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