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Magnetoelectric (ME) interactions in layered structures of magnetostrictiveand piezoelectric phases are mediated by mechanical deformation. Here wediscuss the frequency dependence of ME coupling in bilayers and trilayers ofPermendur, a ferromagnetic alloy, and lead zirconate titanate. Data on MEvoltage coefficient versus frequency profiles reveal a giant ME coupling atelectromechanical resonance. The maximum voltage coefficient of 90 V/cm Oe isthree orders of magnitude higher than low-frequency values. The ME interactionsfor transverse fields is an order of magnitude stronger than for longitudinalfields. These results are in agreement with theory. The resonance ME effect,therefore, is a novel tool for enhancing the magnetic-to-electric fieldconversion efficiency in the composites.Comment: accepted for publication as rapid communication in Applied Physics

Frequency dependence of magnetoelectric interactions in layered structures of ferromagnetic alloys and piezoelectric oxides