A detailed work on synthesis of mono-phasic barium titanate (BT) using TiO2 powder in Ba(OH)(2)-NH3 medium at moderate temperature has been reported. Influence of various preparation parameters such as reaction temperature, reaction time, ammonia concentration and [Ba/ Ti] ratio on the formation of barium titanate was studied. The progress of reaction for formation of BT was monitored by analyzing the X-Ray diffraction data obtained under different processing conditions. To quantify the percentage of reacted titania, calibration curves were generated from synthetic mixtures of titania and pure barium titanate. Mono-phasic tetragonal barium titanate having mean crystallite diameter of 27 nm along (101) plane was formed when the reaction was carried out for 1 h at 130 degrees C while keeping the initial [Ba/Ti] ratio as 1.64 and ammonia concentration as 10 M. (C) 2005 Elsevier B.V. All rights reserved.
Copyright:Copyright [2005]. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.