[en] In this research, the decrease of sintering temperature of piezoelectric ceramic PZT, P(Zr_0.53 Ti_0.47) O₃ was investigated by adding different percent of Ni O impurity to the initial materials and then calcined at 1000 ^deg^C. X-ray diffraction results from different samples proved the formation of two phases including tetragonal and rhombohedral structure. In addition, formation of a new cubic phase of Ni O between grains was approved. Then samples were sintered at 1100^deg^C and electrical and piezo electrical experiments were done on them. Microstructure of samples was investigated by SEM. The results of SEM showed that samples with 10 percent impurity have maximum size of grain and porosity