Studies of Resistivity and Dielectric Properties of Manganese-Doped Barium Titanate Sintered in Pure Nitrogen

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.

Keywords:

• Mn-doped BaTiO₃
• resistivity
• dielectric properties
• pure nitrogen
• X7R

Acknowledgments

This work was supported by Shanghai Pujiang Program (No. 06PJ14091) and Supported by Program for Young Excellent Talents in Tongji University.