Dielectric properties of sodium potassium tantalate mixed system

Abstract

Dielectric and Electrical properties of Na1-xKxTaO3 (x=0, 0.2 & 0.4) ceramics have been investigated in the temperature range 50°C-450°C at 10 kHz frequency. The samples have been prepared by the conventional solid-state reaction method and sintering process. Lattice parameters have been calculated by XRD pattern and grain size has been calculated by SEM. It is observed that dielectric constant and loss tangent with increasing temperature. Near the transition temperature dielectric constant, loss tangent of these samples show anomalous behavior. All the prepared samples show orthorhombic to Cubic structure at room temperature.Dielectric and Electrical properties of Na1-xKxTaO3 (x=0, 0.2 & 0.4) ceramics have been investigated in the temperature range 50°C-450°C at 10 kHz frequency. The samples have been prepared by the conventional solid-state reaction method and sintering process. Lattice parameters have been calculated by XRD pattern and grain size has been calculated by SEM. It is observed that dielectric constant and loss tangent with increasing temperature. Near the transition temperature dielectric constant, loss tangent of these samples show anomalous behavior. All the prepared samples show orthorhombic to Cubic structure at room temperature.