Preparation of calcium stannate by modified wet chemical method

Ze-qiang He; Xin-hai Li; En-hui Liu; Zhao-hui Hou; Ling-feng Deng; Chuan-yue Hu

doi:10.1007/s11771-003-0007-9

Journal of Central South University ›› 2003, Vol. 10 ›› Issue (3) : 195 -197. DOI: 10.1007/s11771-003-0007-9

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Preparation of calcium stannate by modified wet chemical method

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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

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Ze-qiang He,Xin-hai Li,En-hui Liu,Zhao-hui Hou,Ling-feng Deng,Chuan-yue Hu. Preparation of calcium stannate by modified wet chemical method. Journal of Central South University, 2003, 10(3): 195-197 DOI:10.1007/s11771-003-0007-9