Preparation of Sn-Doped PT Material by Sol-Gel Method

摘要

Pure lead titanate (PbTiO_3) and Sn doped PbTiO_3 solid solution were prepared by sol-gel technique. The sol was prepared by mixing stable solutions of Pb-citrate, Sn- and Ti(OC_4H_9)_4 precursors. The structure and particle size and morphology of PbTiO_3 powder were characterized by XRD, and the results shows that the precursors decomposed and forms pure phase after heating at 973 K and 1073 K for 2 h. Influence of different factors on PbTiO_3 gel doped with Sn was discussed. It is found that higher synthesis temperature is needed to prepare Sn doped PbTiO_3 solid solutions.