Thermal decomposition reaction mechanism of the precursor gel made by sol-gel process for nano-crystalline BaTiO3 was studied by TG-DTG and FTIR techniques.The reaction proceeded in three stages:solvents removing,organic ligands decomposing,and amorphous solid BaTiO3 forming.The differential and intergral mechanism functions and activation energy for the third stage were obtained by calculation and comparson.
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