Synthesis and characterizations of BNT-BT and BNT-KNN ceramics

Abstract

BNT-BT [(0.93Bi0.5Na0.5)TiO3- 0.07Ba-TiO3 ] and BNT-KNN [(0.93Bi0.5Na0.5)TiO3 – 0.07K 0.5 Na 0.5 NbO3 ] was prepared by the solid state route using microwave process. The prepared sample was calcined at 900°C for 10 minutes by microwave process for both BNT-BT and BNT-KNN. Then the sample was characterized by different techniques, from XRD of the sample a single perovskite phase was confirmed. All the samples were sintered using the microwave sintering method at 1150°C for 30 minutes with a heating rate of 40°/min. The FE-SEM micrograph images of the samples showed dense microstructure and uniform grain size. Then the study of dielectric properties of the sample was done. The P-E loop measurement confirms the ferroelectric nature of the sample.