Solid-state synthesis of nano-sized Ba(TiSn)O powders and dielectric properties of corresponding ceramics.

Powders of a few compositions of solid solution BaTiSnO ( x = 0.0, 0.1, 0.2, 0.3 and 0.40) have been synthesized at 800 °C for 8 h using Ba(NO), TiO and SnCl·5HO as starting materials. The thermogravimetric (TG) and differential scanning calorimetric (DSC) analysis of mixture in the stoichiometric proportion for sample BaTiSnO have been carried out to understand the formation of solid solutions. Single-phase pure compounds (except x = 0.40) of the samples have been obtained at a lower calcination temperature (800 °C) than that of those reported in the literature for traditional solid-state synthesis making use of oxides and or carbonates as starting material (≥1200 °C). Tetragonal symmetry for compositions x = 0.0 and 0.10, cubic for x = 0.2 and 0.30 were found by X-ray diffraction (XRD) analysis. The transmission electron microscopic (TEM) analysis confirmed that calcined powders have a particle size between 30 and 50 nm. Ceramics of these powders were prepared by sintering at 1350 °C for 4 h. Properties of ceramics obtained in this work have been compared with properties reported in the literature. [ABSTRACT FROM AUTHOR]