This work has as an aim the synthesis of new ceramic materials: Pb1-0.04Sm0.02Nd0.02[(Zr0,55Ti0,45)1-2x,x(Y2/3 ,Mo1/3),x( Y2/3,Ni1/3)]O3 of structure perovskite , such that x = {0.01,0.03,0.05,0.07,0.1}. In order to study well this system and delimiting the composition close to the morphotropic phase boundary (FMB) where coexists the two ferroelectric phases ( tetragonal and rhombohedral) , we varied the Zr/Ti ratio and the dopants ratio for that various compositions were prepared by the method of synthesis with solid way . A thermal treatment was applied to these compositions at different temperatures (1100, 1150, 1180°C), in order to optimize the sintering temperature where the density of ceramics is maximum. We present the preparation and the different stages of the formation reaction of the solid solution. Then we will detail the different techniques of analysis applied to this compound, we begin first by x-ray diffraction, in the following by Infrared spectroscopy, analysis by scanning electron microscopy (SEM) analysis by spectrometric energy dispersive and finally the study of physical properties (dielectric and electromechanical). These studies help us to accumulate as much information on these materials.
Keywords:
PZT , Scan electron microscopy, Microstructure, X-Ray diffraction, Infrared spectroscopy.
Click to View
Click to View
Click to View
Click to View
Click to View
Click to View
Click to View