Synthesis and Characterization of BaTiO3 Nanocrystals

Abstract

Abstract: BaTiO₃ nanocrystals were synthesized by stearic acid-gel methd(SAG) ,using stearic acid, barium stearate and tetrabutyl titanate as raw materials.The synthesis temperature was 650℃ and the formation temperature of perovskites oxide was 950℃ by conventional solid phase reaction method.The transformations of precursor compound to gel and to crystalline phase were characterized by infrared spectroscopy,differential thermal analysis and thermogravimatric analysis.The nanocrystalline BaTiO₃ samples were characterized by transmission electron microscope(TEM) and X-ray diffraction.Powders were further analyzed by optical emission spectroscopy and X-ray fluorescence techniques to determine impurity contents and Ba:Ti ratios.Using this synthesis method,small size and high purity BaTiO₃ nanocrystal could be obtained.

Key words: BaTiO₃, Nanocrystals, Stearic acid-gel method

TrendMD:

WANG Xiao-Hui, ZHAO Chun, WANG Zi-Chen, WU Feng-Qing, ZHAO Mu-Yu. Synthesis and Characterization of BaTiO₃ Nanocrystals[J]. Chem. J. Chinese Universities, 1994, 15(2): 159.

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Synthesis and Characterization of BaTiO₃ Nanocrystals

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