Abstract
Development of sensors technology steady trends toward miniaturization and multifunctionality. The presented in this work new sensor configurations, fabricated from subsequent layers of piezoelectric ceramics and magnetostrictor, was realised by superposition two different effects - piezoelectric and magnetostrictive in one compact structure of piezoelectric transformer. This construction exhibits many interesting and unusual piezoelectric and magnetic properties. The oscillation amplitude, phase and resonance frequency are modified by magnetic field induced interaction forces. Additional advantage of this device is simplified construction, in which the vibration detection is realized avoiding any additional coil for magnetic field generation as in previous solutions. A demonstration of voltage gain and efficiency, as well as gain reversal via the application of magnetic field across a multiferroic heterostructure is presented.
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