Dielectric studies of (0.75) Cu0.5Zn0.5Fe2O4 + (0.25) BaZr0.5Ti0.5O3 composite

Abstract

The composite of the formula (0.75) Cu0.5Zn0.5Fe2O4 + (0.25) BaZr0.5Ti0.5O3 has been discussed in this report. The structural studies were carried out using via X-ray diffraction technique and temperature dependent dielectric properties were examined at a constant field value of 500Hz. The X-ray diffraction data analysis reveal the presence of both the constituent phases. The ferrite Cu0.5Zn0.5Fe2O4 phase has attained cubic structure having space group Fd-3m and BaZr0.5Ti0.5O3 has acquired hexagonal crystal structure with space group P 63/m m c. The morphological and compositional studies were carried out. The as synthesized composite sample was studied for dielectric nature as a function of temperature (120K-320K) at a field of 500Hz. The dielectric constant was observed to initially increasing slowly but as the temperature enhances, dielectric constant increases rapidly near room temperature. Dielectric loss follows same trend with two humps corresponding to the two phases of the composite. The ac conductivity was observed low in the low temperature range and become higher in the extended temperature values.