Phase equilibria, crystal structure at 1373 K and properties of complex oxides in the Nd-Co-Fe-O system / Aksenova T. V.,Elkalashy Sh. I.,Urusova A. S.,Cherepanov V. A. // RUSSIAN JOURNAL OF INORGANIC CHEMISTRY. - 2017. - V. 62, l. 8. - P. 1090-1098.

ISSN/EISSN:

0036-0236 / 1531-8613

Type:

Article

Abstract:

Phase equilibria in the Nd-Co-Fe-O system were systematically studied at 1373 K in air. The homogeneity range and crystal structure of solid solution NdCo1-xFexO3 (0.0 ae x ae 1.0) have been studied by the X-ray powder diffraction method. The structural parameters of complex oxides have been refined by the full-profile Rietveld method. It was shown that all oxides reveal practically stoichiometric oxygen composition within the entire temperature range under investigation. The values of thermal expansion coefficients for the cobaltites NdCo1-xFexO3 (x = 0.3, 0.7) have been calculated within the wide temperature range in air. Chemical stability of NdCo1-xFexO3 (x = 0.3, 0.7) in respect to the solid electrolyte materials (Ce0.8Sm0.2O2-delta and La0.88Sr0.12Ga0.82Mg0.18O3-delta) was examined. Electrical conductivity of NdCo1-xFexO3 (x = 0.3, 0.7) was measured as a function of temperature within the range 300-1373 K in air. It was shown that substitution of cobalt for iron leads to the decrease of conductivity. The isothermal-isobaric cross-section of the phase diagram for the Nd-Co-Fe-O system at 1373 K in air has been presented.

Author keywords:

THERMODYNAMIC PROPERTIES; TRANSPORT-PROPERTIES; MAGNETIC-PROPERTIES; THERMAL-EXPANSION; PEROVSKITE; NDCOO3; DIFFRACTION; STABILITY; LANTHANUM; MEMBRANES

DOI:

10.1134/S0036023617080022

Web of Science ID:

ISI:000408698500012

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	1531-8613
Keywords-Plus	THERMODYNAMIC PROPERTIES; TRANSPORT-PROPERTIES; MAGNETIC-PROPERTIES; THERMAL-EXPANSION; PEROVSKITE; NDCOO3; DIFFRACTION; STABILITY; LANTHANUM; MEMBRANES
Research-Areas	Chemistry
Web-of-Science-Categories	Chemistry, Inorganic \& Nuclear
Author-Email	TV.Aksenova@urfu.ru
ResearcherID-Numbers	Cherepanov, Vladimir/E-6451-2014
ORCID-Numbers	Cherepanov, Vladimir/0000-0003-3653-6459
Funding-Acknowledgement	Government of the Russian Federation {[}02.A03.21.0006]
Funding-Text	The work has been done within the framework of the project part of the State task of the Ministry of Education and Science of the Russian Federation and with partial financial support by Act 211 Government of the Russian Federation, (agreement no. 02.A03.21.0006).
Number-of-Cited-References	44
Usage-Count-Last-180-days	3
Usage-Count-Since-2013	3
Journal-ISO	Russ. J. Inorg. Chem.
Doc-Delivery-Number	FF1ZU