Crystal Structure and Microstructure of (Pb1−xBax)(Zr1−yTiy)O3 Ceramics Prepared by the Solid State Reaction Method

Abstract

Lead Barium Zirconate Titanate [(Pb1−xBax)(Zr1−yTiy)O3]: PBZT ceramics with x = 0.05 and 0.10 and 0 ≤ y ≤ 1 were prepared by the solid state reaction method. The calcination temperatures were between 800 and 1000°C for 1 h and the sintering temperature was 1300°C for 3 h. The crystal structure and microstructure were characterized by a X-ray diffractrometer (XRD) and scanning electron microscopy (SEM). It was found that the structure of calcined powders and sintered pellets of x = 0.05 and 0.10 were in an orthorhombic phase for y = 0, and tetragonal phase for 0.5 ≤ y ≤ 1; the c/a ratio increase with an increasing in the y content, whereas the orthorhombic and tetragonal phase coexist for y = 0.25. Microstructurally, the average particle size and average grain size slightly decreased with an increasing in the y content. The density and shrinkage increased when the x content increased.