Phase equilibria and crystal structure of the complex oxides in the Ln-Ba-Co-O (Ln=Nd, Sm) systems / Gavrilova L. Ya.,Aksenova T. V.,Volkova N. E.,Podzorova A. S.,Cherepanov V. A. // JOURNAL OF SOLID STATE CHEMISTRY. - 2011. - V. 184, l. 8. - P. 2083-2087.

ISSN/EISSN:

0022-4596 / нет данных

Type:

Article

Abstract:

The phase equilibria in the Ln-Ba-Co-O (Ln=Nd, Sm) systems were systematically studied at 1100 degrees C in air. The homogeneity ranges and crystal structure of the solid solutions: Ln(2-x)Ba(x)O(3-delta)(0 < x <= 0.1 for Ln=Nd and 0 < x <= 0.3 for Ln=Sm), Nd(3-y)Ba(y)Co(2)O(7) (0.70 <= y <= 0.80), BaCo(1-z)Sm(z)O(3-delta) (0.1 <= z <= 0.2) were determined by X-ray diffraction of quenched samples. The values of oxygen content (5+delta) for slowly cooled LnBaCo(2)O(5+delta) (Ln=Nd, Sm) samples were estimated as 5.73 for Ln=Nd, and 5.60 for Ln=Sm. The unit cell parameters were refined using Rietveld full-profile analysis. It was shown that NdBaCo(2)O(5.73) possesses tetragonal structure and SmBaCo(2)O(5.60) - orthorhombic structure. The projections of isothermal-isobaric phase diagrams for the Ln-Ba-Co-O (Ln=Nd, Sm) systems to the compositional triangle of metallic components were presented. (C) 2011 Elsevier Inc. All rights reserved.

Author keywords:

Cobaltates; Phase equilibria; Crystal structure; Oxygen content FUEL-CELLS; PEROVSKITE; GD; ND; EU; STABILITY; SERIES; LA; HO; LNBACO(2)O(5+DELTA)

DOI:

10.1016/j.jssc.2011.06.006

Web of Science ID:

ISI:000293802400027

Соавторы в МНС:

Другие поля

Поле	Значение
Month	AUG
Publisher	ACADEMIC PRESS INC ELSEVIER SCIENCE
Address	525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
Language	English
Keywords-Plus	FUEL-CELLS; PEROVSKITE; GD; ND; EU; STABILITY; SERIES; LA; HO; LNBACO(2)O(5+DELTA)
Research-Areas	Chemistry
Web-of-Science-Categories	Chemistry, Inorganic \& Nuclear; Chemistry, Physical
Author-Email	Vladimir.Cherepanov@usu.ru
ResearcherID-Numbers	Cherepanov, Vladimir/E-6451-2014
ORCID-Numbers	Cherepanov, Vladimir/0000-0003-3653-6459
Funding-Acknowledgement	Russian Foundation for Basic Research {[}09-03-00620]; Ministry for Education and Science of the Russian Federation
Funding-Text	This work was financially supported in parts by the Russian Foundation for Basic Research (project no. 09-03-00620) and the Ministry for Education and Science of the Russian Federation within the Federal Target Program ``Research and Teaching Stuff of Innovative Russia for 2009-2013{''}.
Number-of-Cited-References	40
Usage-Count-Last-180-days	2
Usage-Count-Since-2013	28
Journal-ISO	J. Solid State Chem.
Doc-Delivery-Number	806IZ