Abstract
This paper investigated the resistivity and dielectric properties of manganese doped barium titanate sintered in pure nitrogen. The influence of variable doping concentration and Ba/Ti ratio on densification, microstructure, resistivity and dielectric properties was studied. A dielectric with permittivity of 1500 and low dissipation factor of 0.01 measured at 1 kHz, meeting the EIA X7R specification of the Electronic Industries Association standards was obtained in this study. Resistivity of materials sintered in pure nitrogen was 10 11 ∼ 10 12 Ω cm. Ceramics sintered in pure nitrogen had higher resistivity than ceramics sintered in air, and the resistivity increased with Ba/Ti ratio increasing.
Acknowledgments
This work was supported by Shanghai Pujiang Program (No. 06PJ14091) and Supported by Program for Young Excellent Talents in Tongji University.