High DC resistivity in microwave sintered Li0.49Zn0.02Mn0.06Fe2.43O4 ferrites

Ferrites with compositional formula Li0.49Zn0.02Mn0.06Fe2.43O4 were prepared by solid state reaction route and were sintered using conventional and microwave furnaces. The structural and electrical properties were studied and compared. Dielectric constant and tanδ were measured as a function of temperature and frequency. DC resistivity of the samples was calculated by impedance analysis in the temperature range from 25 °C to 150 °C. High DC resistivity (10k–100 kΩ m) was observed for microwave sintered ferrite sample as compared to conventionally sintered sample (2–80 Ω m) in the measured temperature range.