Вид документа : Статья из журнала Шифр издания : 54/O-97 Автор(ы) : Suntsov A. Yu., Leonidov I. A., Markov A. A., Patrakeev M. V., Blinovskov Ya. N., Kozhevnikov V. L. Заглавие : Oxygen Nonstoichiometry and the Thermodynamic and Structural Properties of Double Perovskites PrBaCo2-xCuxO5+δ Место публикации : Russian Journal of Physical Chemistry A. - 2009. - Vol. 83, № 5. - С. 832-838: il. Примечания : Bibliogr. : p. 838 (11 ref.) ISSN: 0036-0244 ББК : 54 Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ Ключевые слова (''Своб.индексиров.''): нестехиометрия--двойные перовскиты--рзм--барий Аннотация: The special features of the structure, electrophysical properties, and oxygen nonstoichiometry of new double perovskites PrBaCo2 –xCuxO5 +δ were studied. Within the homogeneity region with respect to copper 0 x≤1, solid solution samples had an orthorhombic structure (space group Pmmm) with the parameters ap×2ap×2ap, where ap≈3.8Å. The oxygen nonstoichiometry of PrBaCo2 –xCuxO5 +δ changes as the copper content increases approximately as δ ≈0.85 –x/2. The content of oxygen was measured by coulometric titration over wide temperature and oxygen pressure ranges. The partial thermodynamic functions of labile oxygen were calculated and the limits of the thermodynamic stability of the solid solution were established Доп.точки доступа: Suntsov, A. Yu.; Leonidov, I. A.; Леонидов Илья Аркадьевич; Markov, A. A.; Patrakeev, M. V.; Патракеев Михаил Валентинович; Blinovskov, Ya. N.; Kozhevnikov, V. L.; Кожевников Виктор Леонидович