Инд. авторы:	Ivanov M.G., Shmakov A.N., Drebushchak V.A., Podyacheva O.Y.
Заглавие:	Two mechanisms of thermal expansion in perovskite SrCo0.6Fe 0.2Nb0.2O3-z
Библ. ссылка:	Ivanov M.G., Shmakov A.N., Drebushchak V.A., Podyacheva O.Y. Two mechanisms of thermal expansion in perovskite SrCo0.6Fe 0.2Nb0.2O3-z // Journal of Thermal Analysis and Calorimetry. - 2010. - Vol.100. - Iss. 1. - P.79-82. - ISSN 1388-6150. - EISSN 1572-8943.
Внешние системы:	DOI: 10.1007/s10973-009-0008-5; РИНЦ: 23961172; SCOPUS: 2-s2.0-77951252896;
Реферат:	eng: Perovskite SrCo0.6Fe0.2Nb0.2O 3-z attracts attention as a promising material with high oxygen conductivity. The sample was investigated by means of high-temperature X-ray powder diffraction and thermogravimetry. Phase transition was detected near 400 °C and accompanied with significant mass loss. The phase transition affects oxygen mobility, important for the synthesis of oxygen permeable membranes. The unit cell parameters are proved to change with temperature after two effects (1) reversible conventional thermal expansion and (2) irreversible contraction-expansion due to the changes in the oxygen content. In situ high-temperature X-ray diffraction experiments allowed us to separate the contributions and to measure them as a function of temperature. © 2009 Akadémiai Kiadó, Budapest, Hungary.
Ключевые слова:	X ray powder diffraction; X ray diffraction; Thermogravimetric analysis; Thermal stress; Phase transitions; Perovskite; Oxygen permeable membranes; Oxygen; Oxide minerals; Unit cell parameters; Thermogravimetry; Promising materials; Thermal expansion; Oxygen membranes; Oxygen membrane; Oxygen content; Mass loss; In-situ; High temperature X-ray diffraction; High temperature; XRPD; Thermogravimetry; Perovskite; Oxygen membrane; Oxygen mobility;
Издано:	2010
Физ. характеристика:	с.79-82