Glass synthesis and particle size control of BaTiO3 by designing different calcinations modes

• BaTiO3 nano-powders are synthesized from glass in the system B2O3/BaO/TiO2.
• TSC route based on glass formation technique was developed in this work.
• The effects of various calcinations modes upon particles morphology are discussed.
• TSC mechanism is investigated in detail.

Different calcinations techniques are adopted to investigate influences of the calcinations modes on the synthesis of BaTiO3 powders. Two step calcinations (TSC), in which the samples are first heated to a higher temperature (T1) and then cooled quickly down to a low temperature (T2) for staying, can retard the grain growth and accelerates the phase transformation effectively. Using BaO, TiO2 and B2O3 oxides as precursors, the spherical BaTiO3 powders with a particle size of 15–20 nm can be achieved based on TSC technique. A detailed investigation upon the possible particle growth mechanism of TSC is also carried out in this paper. The optimized T1can accelerate the phase transition rate while the optimized T2 can refrain the particle growth depending upon the transition of the particle growth mechanism.

Different calcinations techniques are adopted to investigate the possible effects of calcinations modes on the synthesis of BaTiO3 powders in this paper. TSC route based on glass formation technique was developed in this work. The well-defined spherical BaTiO3 nano-particles with a particle size of 15–20 nm were successfully synthesized by TSC method.Figure optionsDownload as PowerPoint slide