MONITORING THE PROCESSING STEPS OF Pb(Zr0.52Ti0.48)O3 NANO POWDERS BY FTIR TECHNIQUE

Lead Zirconate-Titanate [(Pb (Zrx ,Ti1-x)O3 ) or PZT] with x= 0.52 was prepared by sol-gel method in which acetic acid acts as solvent and chelating agent. With no need to reflux, a homogeneous and clear sol in air was prepared in a short period of time. Aging and gelation was achieved by heating the sol at 100 °C for 24 hours. The pyrolysis was performed at 400 °C for 30 min and the calcination process was done at 650 °C and 850 Co. In all the heating steps, fourier transform infarared spectroscopy (FTIR) was used in order to monitor the trace of the organic solvent and to find the proper temperatures for all pyrolysis and calcination processes. The FTIR data showed that 400 °C and 650 °C are proper temperatures for pyrolysis and calcination steps, respectively. X ray diffraction (XRD) spectrums show that the perovskite structure of PZT has been achieved at 650 °C and the size of nano crystallite has been increased with increasing the calcination temperature. The results of XRD pattern were in good agreement with the result of FTIR.