In this article, in order to obtain tetragonal nanocrystalline BaTiO₃, structural investigations of mechanically activated BaTiO₃ powder have been performed. A mercury porosimetry analysis and scanning electron microscopy method have been applied for determination of the specific pore volume, porosity and microstructure morphology of the samples. The lattice vibration spectra of nonactivated and activated powders, their phase composition, lattice microstrains and the mean size of coherently diffracting domains were examined by Raman spectroscopy and the X-ray powder diffraction method. The average crystal structure of obtained nanocrystalline powders, estimated from X-ray diffraction data, gave evidence of retained, but slightly sustained tetragonality of powders, even for particles as small as ~ 30 nm. Raman spectroscopy also gave clear evidence for local tetragonal symmetries, in particular through the presence of a band at ~ 307 cm^-1.

在本文中，为了获得四方纳米晶 BaTiO ₃，机械活化 BaTiO _{3的结构研究}粉已执行。已应用压汞法分析和扫描电子显微镜法来确定样品的比孔体积、孔隙率和微观结构形态。用拉曼光谱和X射线粉末衍射法检测了非活化和活化粉末的晶格振动光谱、它们的相组成、晶格微应变和相干衍射域的平均尺寸。根据 X 射线衍射数据估计，获得的纳米晶体粉末的平均晶体结构证明了粉末的保留但略微持续的四方性，即使对于小至 约 30  nm 的颗粒也是如此。拉曼光谱还为局部四方对称性提供了明确的证据，特别是通过在 ~  307 厘米^-1。