Dielectric, ferroelectric, magnetic and magnetoelectric properties of 0.lNi_(0.8)Zn_(0.2)Fe_2O_4-0.9Pb_(1-3x/2)Sm_xZr_(0.65)Ti_(0.35)O_3 magnetoelectric composites

摘要

Composites having general formula 0.lNi_(0.8)Zn_(0.2)Fe_2O_4-0.9Pb_(1-3x/2)Sm_xZr_(0.65)Ti_(0.35)O_3, with x=0, 0.01, 0.02 and 0.03 were synthesized by a conventional solid state reaction route. X-ray diffraction analysis was carried out to confirm the coexistence of individual phases and raicrostructural study was done by using a scanning electron microscope. Dielectric properties were studied as a function of temperature and frequency. To study ferroelectric and magnetic ordering in composite samples, P-E and M-H hysteresis loops were recorded respectively. Maximum magnetoelectric coupling coefficient of 22.5mV/cmOe was observed for sample with x=0.03. A significant improvement in dielectric, ferroelectric, piezoelectric and magnetoelectric properties was observed for Sm substitution.