Pogibko V. The synthesis of nanodisperse powders and nanostructural ceramics based on SrTiO3, BaTiO3, PbTiO3, BaZrO3 and PbZrO3 from oxalate precursors

Object - complex oxides with perovskite structure. The aim of the work - establishment of the peculiarities of synthesis of nanodisperse powders and nanostructured piezoceramics from oxalate precursors. Methods of study: thermogravimetry, X-ray diffraction, infrared spectroscopy, X-ray fluorescent spectroscopy, transmission electron microscopy, dilatometry. The mechanisms of the solid-state synthesis of SrTiO3, BaTiO3, PbTiO3, BaZrO3 and PbZrO3 in the products of thermal decomposition of oxalate precursors have been determined. A kinetic model for analysis of low- and high-temperature branches of the solid-state synthesis has been suggested. The method of synthesis of nanodisperse powders and nanostructured piezoceramics with high level of electrophysical properties have been developed. Application field - materials for electronic engineering.