Dielectric, Magnetic and Electrical Properties of Bi_(0.5)Na_(0.5)TiO_3 - CoMn_(0.2)Fe_(1.8)O_4 Composites

摘要

The magnetoelectric composites of inverse spinel ferrite CoMn_(0.2)Fe_(1.8)O_4 (CMFO) and Bi_(0.5)Na_(0.5)TiO_3 (BNT) with general formula (x) Bi_(0.5)Na_(0.5)TiO_3 - (1-x) CoMn_(0.2)Fe_(1.8)O_4 have been prepared through hybrid processing route. X-ray diffraction pattern reveal that CFMO crystallizes in inverse cubic spinel phase and BNT in rhombohedral perovskite phase. Dielectric constant and dielectric loss were reported with frequency at room temperature. The magnetic properties of the composites were calculated from the Magnetization - Magnetic field (M-H) hysteresis loops obtained at room temperature. Ferroelectric properties of the composites were also investigated using Polarization-Electric field (P-E) hysteresis loops.