synthesis and characterisation of NBT-BT piezoelectric ceramics by Solid state Processing Route Method

Abstract

This project deals with the preparation of Lead-free piezoelectric ceramics (1-x) Na0.5Bi0.5TiO3 -xBaTiO3 that has prepared by solid state processing route method for three different composition of NBT-BT in which the “x” has values 0.07, 0.06, and 0.05.These ceramics exhibits a strong piezoelectric property at MPB and an optimum dielectric property due to the addition of BaTiO₃ into Na.₅Bi.₅TiO₃ .The phases of the material of different composition can be known by X-Ray Diffraction analysis. The dielectric measurement can be carried out for different composition. The samples are poled at a voltage 3-4 KV where the piezoelectric measurement were carried out. Scanning Electron Microscope is used for micro-structural characterization. The P-E loop shows that the remnant polarization is high at room temperature for NBT.