Ferroelectric and ferromagnetic properties of PZT5/(Mg_0.5Zn_0.5)Fe₂O₄ composites

A series of Ferroelectric and Ferromagnetic composites were synthesized by the conventional solid-state route using PZT5 and (Mg_0.5Zn_0.5)-Fe₂O₄ as starting materials. XRD and SEM studies indicated that the composites comprised of PZT5 phase with perovskite structure and (Mg_0.5Zn_0.5)Fe₂O₄ phase with spinel structure, no any impurity phase existed. Dielectric constant increased with increasing of PZT5 content under 30 MHz. The Curie temperature was shifted to higher temperature side with increasing of frequency (250, 300, 326, 372°C). The magnetic hysteresis loop showed that the composites had ferrous magnetic properties. The saturation magnetization increased with increasing of (Mg_0.5Zn_0.5)-Fe₂O₄ content. These test properties showed that the composites exhibited both ferroelectric and ferromagnetic properties.