Shape control of polycrystal BaTiO₃ nanoparticles by sol-gel process and reduction of the drive voltage of liquid crystal cell

Abstract

We used barium acetate and tetraisopropoxi titanium as the starting materials and methanol and 2-methoxyethanol (6:4) as solvent. We dissolved polyvinylprrolidone (PVP) as the shape control. We found that we successfully prepared the single phase of polycrystal BaTiO₃ particles which sintered at 1173K for 6h using sol-gel process and that the mean particle size of polycrystal BaTiO₃ was about 100 nm. It was found that the drive voltage of TN cell which doped single phase of polycrystal BaTiO₃ nanoparticles lower than the that of nondoped TN cell.