Вид документа : Статья из журнала Шифр издания : 54/S 89 Автор(ы) : Markov A. A., Shalaeva E. V., Tyutyunnik A. P., Kuchin V. V., Patrakeev M. V., Leonidov I. A., Kozhevnikov V. L. Заглавие : Structural features and enhanced high-temperature oxygen ion transport in SrFe1-xTaxO3-delta Место публикации : Journal of Solid State Chemistry. - 2013. - Vol. 197. - С. 191-197: il. Примечания : Bibliogr. : p. 197 (31 ref.) ISSN: 0022-4596 ББК : 54 Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ Ключевые слова (''Своб.индексиров.''): феррит стронция--ионный перенос--перовскиты двойные--кислородная нестехиометрия Аннотация: Structural features, oxygen non-stoichiometry and transport properties are studied in the oxide series SrFe1−xTaxO3−δ, where x=0.2, 0.3 and 0.4. X-ray diffraction and electron microscopy data evidence formation of the inhomogeneous materials at x=0.3 and 0.4, which include phase constituents with a cubic perovskite and a double perovskite structure types. The composition, the amount and the typical grain size of the phase inhomogeneities are shown to depend both on doping and oxygen content. The increased oxygen-ion conductivity is observed in oxygen depleted materials, which is explained by the increase in the amount of cubic perovskite-like phase and development of interfacial pathways favorable for enhanced oxygen ion transport Доп.точки доступа: Markov, A. A.; Shalaeva, E. V.; Tyutyunnik, A. P.; Kuchin, V. V.; Patrakeev, M. V.; Leonidov, I. A.; Kozhevnikov, V. L.; Кожевников Виктор Леонидович