Magnetoelectric effect in metal-PZT laminates

摘要

Magnetoelectric (ME) composites are two-phase composites consisting of piezoeiectric and piezo-magnetic materials as the participating constituents. These magnetoelectric composites when placed under external magnetic field, show electrical polarization (niagnetoelectric output). The ME coupling is mediated by mechanical stress. In the present study, we have synthesized Ni/PZT/Ni and Fe/PZT/Fe layered composites far studying their ME output by dynamic magnetoelectric set up in which both d.c. and a.c. magnetic fields can be varied. The ME output obtained in these composites are higher than those obtained in 40 percent Ni_(0.97)Co_(0.03)Mn_(0.01) Fe_(1.9)O_4 + 60percent BaTi_(1.02)O_3O_4. The results with varying d.c. and a.c. magnetic fields are presented.