Synthesis And Characterization Of BaTi₂O₅and Its Solid Solution

This work was concentrated on the studies of synthesis BaTi₂O₅ceramic solidsolution and its dielectric properties by sol-gel method, synthesis BaTi₂O₅ceramic byanisotropic grain growth. Effect of different doping on BaTi₂O₅ceramic synthesisconditions and solid solubility limit, parameters changes of the lattice, sintering anddielectric properties and mechanical activation was prepared BaTi₂O₅ceramicpowders.Research results revealed:Sol-gel method prepared under differention doping of BaTi₂O₅ceramic solidsolution with a mixed solution of pH=4nBa（Ac）2: nTi（OC4H9）4: nCH₃COOH: nMOE=1.00:2.00:7.97:21.17insulation gel transition temperature of100℃process conditions and effect of it′s microstructure and dielectric properties. Thephase analysis showed that the peak doping BaTi₂O₅significantly higher than theundoped peak, dielectric properties analysis showed that the dielectric constant of thedoping BaTi₂O₅significantly higher than the undoped. The difference is that differentdoping BaTi₂O₅ceramic solid solubility limit is different.Synthesis of BaTi₂O₅ceramic powder with mechanical activation method, underball ratio of20:1, milling time of3hours. Phase analysis showed that BaTi₂O₅powder phase single, the infrared spectrum was consistent with phase analysis,dielectric properties analysis showed that this method is similar to sol-gel methodsynthesis of BaTi₂O₅′s dielectric constant, but the dielectric loss increased.