Giant magnetoelectric effect in Metglas/polyvinylidene-fluoride laminates

Here, the authors report thin (< 100 mu m) and flexible magnetoelectric (ME) composites consisting of Metglas (high-mu magnetostriction) and polyvinylidene-fluoride (piezopolymer) layers laminated together. Both unimorph and three-layer configurations have been studied. The authors find that these ME laminates (i) require dc magnetic biases as low as 8 Oe to (ii) induce giant ME voltage coefficients of 7.2 V/cm Oe at low frequencies, and up to 310 V/cm Oe under resonant drive. (c) 2006 American Institute of Physics.