Converse magnetoelectric effects in piezoelectric-piezomagneticrnlayered composites

摘要

By using the product effect of converse piezoelectric effect and piezomagnetic effect, a multilayer piezoelectric-piezomagnetic composite consisting of transversely poled piezoelectric Pb(Mg_(1/3)Nb_(2/3))O_3-PbTiO_3 crystal layers and longitudinally magnetized magnetostric-tive Tb_(0.27)Dy_(0.73)Fe_2 layers has been developed and its converse magnetoelectric (ME) effect has been studied. A wide bandwidth of the frequency peak under different magnetic bias fields was also observed. The largest value of converse ME coefficient aB at a resonance frequency of 78.6 kHz is 1.15 G/V, which is ～10 times higher than the value at sub resonant frequencies. This composite exhibits a promising potential in the magnetic force devices electrically controlled.