Abstract

LEMOS, F. C. D. et al. Structural and morphological characterization of rare earth modified lead titanate. Cerâmica [online]. 2007, vol.53, n.328, pp. 422-447. ISSN 0366-6913.  http://dx.doi.org/10.1590/S0366-69132007000400017.

Rare earth modified lead titanate powders Pb_1-xRE_xTiO₃ (REPT), x = 0.01, 0.05, 0.07 and RE = Yb, Y, were prepared by the Pechini method. The materials were calcined under flowing oxygen at different temperatures from 300 to 700 ºC. Nanostructured REPT were investigated using X-ray diffraction, scanning electron microscopy and surface area analysis (BET). The results suggest that the modifier cation incorporated into the system has notable influence in the microstructure and a notable decrease in the crystallite sizes.

Keywords : PbTiO₃; rare earth; perovskite; Pechini method.