Fabrication plate-like BaBi₄Ti₄O 1 5 single-crystalline particles by the molten salt synthesis method

Plate-like single-crystalline BaBi4Ti4O15 particles were synthesized by the molten salt synthesis (MSS) method. The effects of sintering temperature, holding time, and NaCl-KCl molten salt content on the phase structure and morphology of plate-like BaBi4-Ti4O15 particles were investigated. The results show that plate-like BaBi4Ti4O15 particles can be synthesized when the sintering temperature is above 800∘C. The size of particles increases with increasing sintering temperature and molten salt content. Largely anisotropic plate-like BaBi4Ti4O15 particles with diameter ≥10μm and thickness of ∼0.3 μm can be obtained under the optimum process parameters. The crystal structure of BaBi4Ti4O15 was determined as A21am by TEM, which should be attributed to the Bi3+ and Ba2+ diffusing into [TiO6] octahedrons.