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

Abstract Ferrites with compositional formula Li 0.49 Zn 0.02 Mn 0.06 Fe 2.43 O 4 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 tan δ 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.