Resonance magnetoelectric interactions due to bending modes in a nickel-lead zirconate titanate bilayer

Resonance magnetoelectric (ME) effects due to bending oscillations have been investigated in bilayers of Ni and lead zirconate titanate (PZT). For nominal sample dimensions, such oscillations occur at a few kilohertz that are much smaller than radial or thickness acoustic modes and result in ME voltage coefficients of 1 V/cm Oe for tangential magnetization. The mode frequencies can be controlled with proper choice for thicknesses of Ni and PZT. Theoretical estimates of mode frequencies are in very good agreement with the data. The resonator is potentially useful for realizing low-loss ME sensor networks for ac fields as low as 10 mu Oe. (c) 2008 American Institute of Physics.