Modelling of Dielectric Studies on Rare-Earth Substituted Strontium Bismuth Titanate Using Modified Lorentz Equation

Abstract

Samarium, Sodium modified Strontium Bismuth Titanate ceramics were prepared using solid-state sintering approach. Calcined powders obtained after treatment at 800 °C for 120 min were pressed into1 cm diameter and 1 mm thick pellets using uniaxial hydraulic press. These pellets were sintered at 1160 °C for 120 min in a programmable furnace. XRD studies confirmed single-phase Orthorhombic structure and SEM micrographs identified the sheet-like grain formation with no preferred alignment. Dielectric data was matched with modified Lorentz equation to ensure the reliability of the obtained experimental results. The activation energies (E_a) of samples were found to be in the range 70–85 μeV.

Keywords:

• Modified Lorentz equation
• orthorhombic structure
• ceramics and dielectric constant

Acknowledgments

Furthermore, the authors are also thankful to DST and Vardhaman College of Engineering, Shamshabad, Hyderabad for their constant support.

Funding

The authors would like to acknowledge the Faculty of Science and Technology, IFHE, Hyderabad for financial support and encouragement.

Data availability

The data that support the findings of this study are available from the corresponding author upon reasonable request.