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A new complex-precursor method was proposed to prepare nanometer-sized BaTiO3 powder. Firstly, [Ti2O(O2)2(ta)2]4− complex ions were prepared by the reaction of H2O2, Ti4+ and ta3− (ta=[C6H6O6N]3−) with a desirable amount of surface active agent, and then the Ba2[Ti2O(O2)2(ta)2]·2H2O precursor was obtained by reaction between [Ti2O(O2)2(ta)2]4− and Ba2+. Finally, the precursor was annealed at 800 °C...
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