Phase Formation, Microstructure, Magnetic and Electrical Properties of (1-x)Mg 0.7 Zn 0.3 Fe 2 O 4 -xBa 0.7 Sr 0.3 TiO 3 Ceramics Composite.

(1-x)Mg0.7Zn0.3Fe2O4-(x)Ba0.7Sr0.3TiO3ceramics composite with x = 0.0, 0.2, 0.4, 0.6 and 1.0 were prepared by the solid state reaction method. The spinel structure of the ferrite phase and perovskite structure of ferroelectric phase were confirmed by x-ray diffraction (XRD). SEM micrographs reveal compatibility of ferrite grains with ferroelectric grains. It can be seen size of grain decrease with increase Ba0.7Sr0.3TiO3phase concentrations. The magnetic property can be identified from the magnetic permeability of the sample and the values were observed to be 0.53–0.83 N/A2and its increases with the increasing of Mg0.7Zn0.3Fe2O4phase contents. The electrical resistivity values were found to be in the range ∼0.06–52.99 MΩm. The dielectric constant was determined as a function of frequency (in the range 100–104Hz). The results also reveal that for the lower concentrations of Mg0.7Zn0.3Fe2O4, ferroelectric behavior is noticed with a high electrical resistivity and dielectric constant. [ABSTRACT FROM AUTHOR]