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High-temperature dielectrics in the BiScO 3-BaTiO 3-(K 1/2Bi 1/2)TiO 3 ternary system

Journal Article


Abstract


  • Perovskite solid solution in the (1-x)[0.4BiScO 3-0.6BaTiO 3]+x (K 1/2Bi 1/2)TiO 3 [BSBT-KBTx] system was synthesized using conventional sintering and hot-isostatic pressing. Dielectric properties of BSBT ceramics with different dopant levels of KBT were characterized as a function of temperature and frequency for potential use of high-temperature capacitors. The BSBT ceramics with KBT exhibited high dielectric permittivities (�� r) (>1700 at RT) and low dielectric loss over the temperature range from 100�� to 300��C, with flat temperature coefficients of permittivity (TC��s). In addition, BSBT ceramics with increasing KBT were observed to possess dielectric relaxation characteristics at temperatures (>RT) as observed in lead-based relaxors. Furthermore, high energy densities, being on the order of 4.0 J/cm 3 at 220 kV/cm was observed for the BSBT-KBT20 ceramics from the electric-field polarization behavior. �� 2009 The American Ceramic Society.

Publication Date


  • 2009

Citation


  • Lim, J. B., Zhang, S., Kim, N., & Shrout, T. R. (2009). High-temperature dielectrics in the BiScO 3-BaTiO 3-(K 1/2Bi 1/2)TiO 3 ternary system. Journal of the American Ceramic Society, 92(3), 679-682. doi:10.1111/j.1551-2916.2009.02973.x

Scopus Eid


  • 2-s2.0-62549086966

Start Page


  • 679

End Page


  • 682

Volume


  • 92

Issue


  • 3

Place Of Publication


Abstract


  • Perovskite solid solution in the (1-x)[0.4BiScO 3-0.6BaTiO 3]+x (K 1/2Bi 1/2)TiO 3 [BSBT-KBTx] system was synthesized using conventional sintering and hot-isostatic pressing. Dielectric properties of BSBT ceramics with different dopant levels of KBT were characterized as a function of temperature and frequency for potential use of high-temperature capacitors. The BSBT ceramics with KBT exhibited high dielectric permittivities (�� r) (>1700 at RT) and low dielectric loss over the temperature range from 100�� to 300��C, with flat temperature coefficients of permittivity (TC��s). In addition, BSBT ceramics with increasing KBT were observed to possess dielectric relaxation characteristics at temperatures (>RT) as observed in lead-based relaxors. Furthermore, high energy densities, being on the order of 4.0 J/cm 3 at 220 kV/cm was observed for the BSBT-KBT20 ceramics from the electric-field polarization behavior. �� 2009 The American Ceramic Society.

Publication Date


  • 2009

Citation


  • Lim, J. B., Zhang, S., Kim, N., & Shrout, T. R. (2009). High-temperature dielectrics in the BiScO 3-BaTiO 3-(K 1/2Bi 1/2)TiO 3 ternary system. Journal of the American Ceramic Society, 92(3), 679-682. doi:10.1111/j.1551-2916.2009.02973.x

Scopus Eid


  • 2-s2.0-62549086966

Start Page


  • 679

End Page


  • 682

Volume


  • 92

Issue


  • 3

Place Of Publication