Synthesis and Performance Evaluation of BaxSr1 –xTiO3 Ceramic-Based MIM Capacitor for Energy Storage Application.

Metal-insulator-metal (MIM) capacitor with high-k insulator such as BST enhances specific capacitance. The effects of barium mole fraction (x) of BaxSr1 –xTiO3 ceramic-based MIM capacitor on specific capacitance and leakage current density are reported in this article. BaxSr1 –xTiO3 nanopowder for various x are synthesized using solid-state reaction method and the performance parameters of Ag/BaxSr1 –xTiO3/Ag MIM capacitors are evaluated. The mean crystallite sizes are in 20 to 60 nm range. Ba0.7Sr0.3 TiO3 ceramics show higher relative permittivity owing to its higher mean crystallite size. The insulator with higher crystallite size at dominant orientation shows enhanced leakage performance. Ba0.1 Sr0.9 TiO3 ceramic capacitor shows optimum performance altogether. [ABSTRACT FROM AUTHOR]