Preparation of calcium stannate by modified wet chemical method

来源期刊：中南大学学报(英文版)2003年第3期

论文作者：何则强 李新海 刘恩辉 侯朝辉 邓凌峰 胡传跃

文章页码：195 - 197

Key words：CaSnO₃;wet chemical method; preparation; characterization

Abstract: A modified wet chemical route for low-temperature synthesis of the calcium stannate CaSnO₃，a potentialmaterial 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℃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 deriva- tive 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 gym.