Two mechanisms of thermal expansion in perovskite SrCo0.6Fe0.2Nb0.2O3-z / Ivanov M. G.,Shmakov A. N.,Drebushchak V. A.,Podyacheva O. Yu. // JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY. - 2010. - V. 100, l. 1. - P. 79-82.

ISSN/EISSN:

1388-6150 / нет данных

Type:

Article

Abstract:

Perovskite SrCo0.6Fe0.2Nb0.2O3-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 A degrees 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.

Author keywords:

Oxygen membrane; Perovskite; Thermogravimetry; XRPD SOLID-SOLUTIONS

DOI:

10.1007/s10973-009-0008-5

Web of Science ID:

ISI:000276744500011

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	APR
Publisher	SPRINGER
Address	VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
Language	English
Keywords-Plus	SOLID-SOLUTIONS
Research-Areas	Thermodynamics; Chemistry
Web-of-Science-Categories	Thermodynamics; Chemistry, Analytical; Chemistry, Physical
Author-Email	mr.ivanov@ngs.ru
ResearcherID-Numbers	Drebushchak, Valeri/B-6763-2008 Podyacheva, Olga/D-5194-2013
ORCID-Numbers	Drebushchak, Valeri/0000-0002-2106-6194
Funding-Acknowledgement	Siberian Branch of the Russian Academy of Sciences {[}82]
Funding-Text	The work was supported by Interdisciplinary Integration project \# 82 from the Siberian Branch of the Russian Academy of Sciences. The authors thank Prof. S.V. Tsybulya for useful discussion.
Number-of-Cited-References	16
Usage-Count-Since-2013	10
Journal-ISO	J. Therm. Anal. Calorim.
Doc-Delivery-Number	584II