Characterization of BaSnO3 powder obtained by a modified sol-gel route

A modified sol-gel method is used to prepare stoichiometric, homogeneous barium stannate powders. The synthesis process is described in detail in this paper. One of the main characteristics of this process is that monophasic powders ave obtained easily at low temperature (1000 degrees C). The resulting powders are characterized by several methods such as X-ray diffraction, scanning electron microscopy, X-ray analysis, infrared spectroscopy and thermogravimetric analysis. The different characterizations allow us to conclude that powders obtained by this method contain no impurity. These conclusions show that this process is ideal for obtaining fine powders that will give dense ceramics. (C) 1997 Elsevier Science Limited.