Phase formation and dielectric properties of (Pb0.925Ba0.075)(Zr1-xTix)O3 ceramics prepared by the solid-state reaction method

Lead barium zirconate titanate [(Pb0.925Ba0.075)(Zr1-xTix)O-3] ceramics with 0 <= x <= 1 were prepared by the solid-state reaction method. The calcination temperatures were between 800 degrees C and 1000 degrees C for 1 h and the sintering temperature was 1200 degrees C for 3 h. It was found that the structure of the calcined powders and sintered pellets was in an orthorhombic phase for x = 0; a rhombohedral phase for x = 0.25 and a tetragonal phase for 0.5 <= x <= 1. The c/a ratio increased with an increase in the x content. The average particle size and density slightly decreased with an increase in the x content, while the average grain size, linear shrinkage, and Curie temperature increased when the x content increased.