Microwave Synthesis of BaTiO3 from BaCO3 and TiO2
BaTiO3 powder was synthesized from BaCO3 and TiO2 using a domestic microwave oven. The samples were synthesized under different temperatures with various holding times. X-ray diffraction (XRD) and scanning electron microscopy (SEM) were used to examine the phase compositions and morphologies of the result samples. The main phase obtained at 950°C was BaTiO3, and the intermediate phases Ba2TiO4 and Ba4TiO9 were also detected. The pure, well-crystallized BaTiO3 powder could be obtained at 1050°C within 10 minutes and the particle size ranged from 300~500nm. In comparison with conventional synthesis, faster speed and finer grains could be achieved through microwave heating.
Wei Pan and Jianghong Gong
Y. Y. Liu and W. Pan, "Microwave Synthesis of BaTiO3 from BaCO3 and TiO2", Key Engineering Materials, Vols. 336-338, pp. 669-671, 2007