Abstract
Tetragonal BaTiO3 nanoparticles are synthesized via solvothermal route in an ethanol water mixture. Ba(OH)(2)center dot 8H(2)O is used as Ba precursor and TiO2 (P25 Degussa similar to 25 nm, 30% anatase, 70% rutile) is used as Ti precursor in the Ba : Ti molar ratio 2 : 1. Effect of temperature and time study on solvothermal synthesis of BaTiO3 revealed that a moderate reaction temperature i.e. 185 degrees C and longer reaction time favour tetragonal phase stabilization. Dissolution-precipitation appears to be the transformation mechanism for the crystallization of BaTiO3 from particulate TiO2 precursor.