Effect of Nb on Barium Titanate Prepared from Citrate Solutions

摘要

The influence of the addition of dopants on the microstructure development and electrical properties of BaTiO_3 doped with 0.2 0.4, 0.6, 0.8 mol percent of Nb and 0.01 mol percent of Mn based compounds was studied. Doped barium titanate was prepared using the polymeric precursor method from citrate solutions. The powders calcined at 700 deg C for 4 hours were analysed by infrared (IR) spectroscopy to verify the presence of carbonates, and by X-ray diffraction (XRD) for phase formation. The phase composition, microstructure and dielectric properties show a strong dependence on the amount of added niobium.