Preparation of calcium stannate by modified wet chemical method

Abstract

A modified wet chemical route for low-temperature syntheiss of the calcium stannate CaSnO₃, a potential material for dielectric applications is reported. Firstly, a precursor CaSn(OH)₆ was prepared using tin tetrachloride, calcium chloride and sodium hydroxide at room temperature. Then the precursor was annealed at relatively low temperature of 600 °C to obtain CaSnO₃. The phase identification, thermal behavior and surface morphology of the samples were characterized by element analysis, X-ray diffraction (XRD), thermo-gravimetric (TG) analysis and derivative thermo-gravimetric (DTG) analysis, Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) in detail. The results show that CaSnO₃ obtained by this method possesses a cubic perovskite structure with average grain size of 5 µm.

Keywords

CaSnO₃ / wet chemical method / preparation / characterization

References

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