Novel Synthesis for Ultrafine Barium Titanate Powders Using Peptized Titania Nano-Sol

Abstract:

We have investigated a novel synthesis for highly spherical and ultrafine barium titanate (BaTiO3) powders using a peptized titania (TiO2) nano-sol as a precursor. The obtained TiO2 nano-sol had the size less than 10 nm, which could be easily converted to BaTiO3 under 100 °C. The size of the resulting BaTiO3 powder could be controlled from 42 to 167 nm by lowering the solution concentration from 1.00 M to 0.15 M. BET analysis indicated that the as-prepared BaTiO3 powders had some porosity which was increased with the particle size. It was also found that the as-prepared BaTiO3 with smaller size had higher tetragonality and less intra-granular pores after annealing.

• Periodical: Advances in Science and Technology (Volume 45)
• Pages: 254-259
• DOI: https://doi.org/10.4028/www.scientific.net/AST.45.254
• Online since: October 2006
• Authors: Jai Joon Lee, Jun Tae Kim, Kum Jin Park, Kang Heon Hur, Sang Man Koo
• Keywords: Barium Titanate (BT), Peptization, Tetragonality, Titania Nano-Sol

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