Effect of MnO2 doping on the dielectric properties of barium titanate ceramics

The effect of MnO2 doping on the structure, microstructure and dielectric properties of BaTiO3 has been studied. For this purpose MnO2-doped BaTiO3 ceramics have been prepared using a conventional ceramic method. The energy-dispersive X-ray spectroscopy investigations have revealed that the samples BaTiO3 + x wt. % MnO2 (x = 0.01; 0.1) are perfectly sintered. Our studies have shown that all the electric parameters under investigation depend on the frequency of electric field and the amount of manganese substitution. In order to understand better the character of phase transition in BaTiO3 + x wt. % MnO2(x = 0.01; 0.1), we have also studied the thermal behaviour of these compounds.