Specific Features of Phase Equilibriums in Ln-Ba-Fe-O Systems / Volkova N. E.,Urusova A. S.,Gavrilova L. Ya.,Bryuzgina A. V.,Deryabina K. M.,Mychinko M. Yu.,Lebedev O. I.,Raveau B.,Cherepanov V. A. // RUSSIAN JOURNAL OF GENERAL CHEMISTRY. - 2016. - V. 86, l. 8. - P. 1800-1804.

ISSN/EISSN:

1070-3632 / 1608-3350

Type:

Article

Abstract:

Formation of five-layered Ln(2-epsilon)Ba(3+epsilon)Fe(5)O(15-delta) phases {[} exhibiting nanoscale ordering with layer-by-layer location of the cations in the Ln-Ba-(Ln, Ba)-(Ln, Ba)-Ba-Ln perovskite-type structure] has occurred in the Ln-Ba-Fe-O (Ln = Y, Pr, Nd, Sm, Eu, and Gd) systems at 1100 degrees C in air. Partial substitution of iron with cobalt (Ln(2-epsilon)Ba(3+epsilon)Fe(5-y)Co(y)O(15-delta), Ln = Nd, Sm, Eu) has stabilized formation of the ordered structure. The oxygen content in the complex oxides has been determined in air over a wide temperature range by means of high-temperature thermogravimetry and iodometric titration. The change in oxygen content with temperature for the phases with five-layered ordering was significantly smaller than for the disordered phases.

Author keywords:

complex oxide; perovskite-type structure; oxygen off-stoichiometry OXIDE FUEL-CELLS; CRYSTAL-STRUCTURE; LAYERED PEROVSKITE; SM; LNBACO(2)O(5+DELTA); MAGNETISM; CATHODES; ND

DOI:

10.1134/S1070363216080041

Web of Science ID:

ISI:000386572500004

Соавторы в МНС:

Другие поля

Поле	Значение
Month	AUG
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
EISSN	1608-3350
Keywords-Plus	OXIDE FUEL-CELLS; CRYSTAL-STRUCTURE; LAYERED PEROVSKITE; SM; LNBACO(2)O(5+DELTA); MAGNETISM; CATHODES; ND
Research-Areas	Chemistry
Web-of-Science-Categories	Chemistry, Multidisciplinary
Author-Email	v.a.cherepanov@urfu.ru
ResearcherID-Numbers	Cherepanov, Vladimir/E-6451-2014
ORCID-Numbers	Cherepanov, Vladimir/0000-0003-3653-6459
Number-of-Cited-References	21
Usage-Count-Last-180-days	5
Usage-Count-Since-2013	11
Journal-ISO	Russ. J. Gen. Chem.
Doc-Delivery-Number	EA4HQ