Abstract
BaTiO3 nanocrystalline particles with narrow distribution and 8nm average particle size were synthesized by microemulsion method, and sintering behavior was studied by temperature dependent in-situ TEM microscopy from R.T. to 1200°C. Adding (Ba, Ti)double alkoxide solution in Water/octanol/NP-10/cyclohexane system provided a highly dispersed clear solution of nanocrystalline BaTiO3 synthesized particles. The nanocrystalline BaTiO3 powder was obtained by removing all the solvent from the solution through addition of ammonia solution and centrifuging it. Even in the nanocrystalline BaTiO3 particles having sizes less than 10nm in diameter many small voids of 1-2nm existed. The in-situ TEM observation revealed the sintering behavior of the nanocrystalline BaTiO3 particles and the creation and removal process of the inner small voids.
