SYNTHESIS AND SINTERING OF NANOCRYSTALLINE BARIUM-TITANATE POWDER UNDER NONISOTHERMAL CONDITIONS - II - PHASE-ANALYSIS OF THE DECOMPOSITIONPRODUCTS OF BARIUM TITANYL-OXALATE AND THE SYNTHESIS OF BARIUM-TITANATE

The effect of heating rate on the phase composition of decomposition p roducts for barium-titanium oxalate under isothermal conditions is stu died The mechanism of BaTiO3 synthesis changes with heating regime. Fe atures of nonlinear heating regimes are considered: rapid heating duri ng both decomposition of crystal hydrates and in ultrafine mixture of titania, baria, and barium carbonate followed by slow heating while th e system moves towards an equilibrium condition.