The dielectric and electrical properties of Ag2O doped 0.9(Na0.52K0.48)NbO3-0.1LiTaO3 ceramics

Ag doped 0.9(Na0.52K0.48)NbO3-0.1LiTaO3 lead free piezoelectric ceramics were prepared by the conventional mixed method. The effects of the Ag content on the microstructure and the electrical properties for the 0.9(Na0.52K0.48)NbO3-0.1LiTaO3 ceramics were systematically investigated. X-ray diffraction analysis was employed to extract the structural properties. XRD analysis showed that the specimens employed in this study have the perovskite structure. The dielectric and electric properties of Ag2O doped 0.9(Na0.52K0.48)NbO3-0.1LiTaO3 ceramics were measured from 1 kHz to 1 MHz with the various temperature range. The experimental results show that Ag strongly affects the microstructure and the electrical properties of the ceramics.

► NKN-based piezoelectric ceramics with Ag doping.
► Orthorhombic to tetragonal phase tranision.
► Temperature dependent dielectric properties.