EFFECT OF SINTERING TEMPERATURE ON THE STRUCTURAL AND DIELECTRIC PROPERTIES OF ZINC CADMIUM FERRITES PREPARED BY EGG-WHITE TECHNIQUE
Abstract
The effect of cadmium substitution and sintering temperature on the microstructure and dielectric properties of nano ZnCdxFe2-xO4 ferrites (x=0.0, 0.05, 0.1, 0.2, 0.3 and 0.5) has been investigated and prepared by egg-white technique. Electrical conductivity and dielectric measurements have been analysed in the frequency range from 100 Hz to 10 MHz. The variation of the real (ε′) and imaginary (ε″) part of dielectric constant, AC conductivity (σAC) and loss tangent (tan δ) with frequency has been studied. It follows the Maxwell–Wagner model based on the interfacial polarization in consonance with the Koop's phenomenological theory. It is found that the permittivity of ZnCdxFe2-xO4 ferrites improved and shows a maximum value (~9 × 103) at 100 Hz for the x=0.1 sample.
