Dielectric and Piezoelectric Properties of Sr_1-2xNa_xSm_xBi₄Ti₄O₁₅ (x = 0–0.4) Ceramics

Abstract

Sr_1-2xNa_xSm_xBi₄Ti₄O₁₅ ceramics with x = 0-0.4 is synthesized through sol gel process. XRD patterns of the ceramics confirm single phase formation with orthorhombic structure. Lattice parameters are obtained from XRD and found to be decreased with increase of substitution. The dielectric and piezoelectric properties of ceramics are investigated. The piezoelectric activity of the ceramics enhanced with the substitution Na and Sm in A-site made these materials in actuator applications at high temperatures.

Keywords:

• BLSF
• dielectrics
• piezoelectrics
• tolerance factor

Acknowledgments

The authors thank BRNS for financial support and DMRL for poling facilities.