Structure and Electrical Properties of Oxygen-Deficient Strontium Copper Niobate / Animitsa I. E.,Dogodaeva E. N.,Zabolotskaya E. V. // RUSSIAN JOURNAL OF INORGANIC CHEMISTRY. - 2010. - V. 55, l. 2. - P. 254-260.

ISSN/EISSN:

0036-0236 / нет данных

Type:

Article

Abstract:

The transport properties of Sr(5.66)Cu(0.14)Nb(2.20)O(11.30) double perovskite, which enters the homogeneity region of (Sr(1-y)Cu(y))(6-2x)Nb(2+2x)O(11+3x) solid solution, are concerned. The total conductivity is differentiated into terms over wide ranges of temperatures and oxygen partial pressures p(O2) in dry and humid atmospheres. When p(O2) is low or high, a test sample has dominant electron transport of n- or p-type, respectively. In air (p(O2) = 0.21 atm), the p-type electron conductivity term increases with temperature elevation. In a humid atmosphere (p(H2O) = 0.02 atm), a sample is capable of a reversible incorporation of water occlusion from the gas phase; as a result, some proton conductivity term appears and ion transference numbers increase over a wide range of p(O2) values.

Author keywords:

PEROVSKITE-RELATED STRUCTURE; TRANSPORT-PROPERTIES; CHEMICAL DIFFUSION; WATER; CONDUCTIVITY; BA4CA2NB2O11; PROTON; SR6TA2O11; PHASES

DOI:

10.1134/S003602361002018X

Web of Science ID:

ISI:000276499900018

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	FEB
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
Keywords-Plus	PEROVSKITE-RELATED STRUCTURE; TRANSPORT-PROPERTIES; CHEMICAL DIFFUSION; WATER; CONDUCTIVITY; BA4CA2NB2O11; PROTON; SR6TA2O11; PHASES
Research-Areas	Chemistry
Web-of-Science-Categories	Chemistry, Inorganic \& Nuclear
Funding-Acknowledgement	Russian Foundation for Basic Research {[}07-08-00693]
Funding-Text	This work was supported by the Russian Foundation for Basic Research (project no. 07-08-00693).
Number-of-Cited-References	15
Usage-Count-Since-2013	4
Journal-ISO	Russ. J. Inorg. Chem.
Doc-Delivery-Number	581CY