IMF2017

Multiferroics magnetoelectric materials that present induced electric polarization due to an applied magnetic field or vice versa. These materials are classified in monophasic and biphasic multiferroics, respectively with intrinsic and extrinsic magnetoelectric response. The mechanisms to explain how to influence the electric field control of magnetic properties, magnetic-anisotropy, magnetic order and magnetic domain wall motion on biphasic composites. The possible mechanisms the electric field control on magnetic properties are magneto-elastic effect, and charge modulation effect depends on type composition and structure material. In this work we present a studied of the electric polarization influence on the magnetic properties in PMN-PT/CoFe₂O₄ of the 0-3 type magnetoelectric particulate biphasic. The samples were prepared by solid-state reaction method in concentration 80/20 in two condition sintering time of 1 hour and 10 hours at temperature of 1050 °C. The samples were characterized using magnetometry and magnetoelectric response on the two conditions of the remanent electric polarization {0,+20} kV/cm under electric field applied at room temperature (RTP) and 80 °C (TP). Our results showed that the saturation magnetization decreases with the electric polarization in ~ 2% (RTP) and ~ 5% (TP) to the field magnetic parallel to poled axis and increases ~ 4% (RTP) and ~ 6% at 80 °C to the field magnetic perpendicular to poled axis. However, the coercive field did not change. This is an indication that electric polarization not only stressed the system, but also induced magnetic-anisotropy caused by the electric polarization over strain interfacial mediated coupling between constituted phases.