SrBi2Ta2O9 powder synthesized by molten salt methods

The purely stoichiometric SrBi2Ta2O9 powder was successfully prepared by a molten salt method using Bi2O3, SrCO3 and Ta2O3 as raw materials and a mixture of NaCl and KCl added. The crystal structure and morphology of the powder were characterized by X-ray diffraction and scanning electron microscope. The XRD patterns reveal that single phase SrBi2Ta2O9 powder can be obtained by the molten salt method, and the SEM photographs show that the powder has a high degree of shape anisotropy. The effect of reacting temperature on phase formation and particle size was reported. Further more the mechanism of molten salt technique was briefly discussed.