Electric Properties of Solid Solutions Based on Strontium Tantalate with Perovskite-Type Structure. Protonic Conductivity / Kochetova N. A.,Animitsa I. E.,Neiman A. Ya. // RUSSIAN JOURNAL OF ELECTROCHEMISTRY. - 2010. - V. 46, l. 2. - P. 168-174.

ISSN/EISSN:

1023-1935 / нет данных

Type:

Article

Abstract:

Conductivity of the Sr(6 - 2x)Ta(2 + 2x)O(11 + 3x) (0 <= x <= 0.33) solid solutions with the cryolite structure was studied in the atmosphere with a high content of water vapors under temperature and oxygen activity variation in the gas phase. Appearance of the protonic conductivity component was proved at the temperatures below 700 degrees C. It was found that protonic conductivity increases at a decrease in parameter x in the composition series, which is due to an increase of both the concentration of protonic defects formed in the structure and of their mobility. In the case of compositions with x < 0.15 at the temperatures below 550 degrees C, the protonic transport becomes predominant.

Author keywords:

double perovskites; oxygen vacancies; protonic defects; protonic conductivity METAL NIOBATES

DOI:

10.1134/S1023193510020072

Web of Science ID:

ISI:000278122100007

Соавторы в МНС:

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	METAL NIOBATES
Research-Areas	Electrochemistry
Web-of-Science-Categories	Electrochemistry
Author-Email	Nadezhda.Kochetova@usu.ru
Funding-Acknowledgement	Russian Foundation for Basic Research {[}07-08-00693-a]; Federal Agency on Science and Innovations
Funding-Text	The work was financially supported by the Russian Foundation for Basic Research, project no. 07-08-00693-a and Federal Agency on Science and Innovations.
Number-of-Cited-References	15
Usage-Count-Since-2013	2
Journal-ISO	Russ. J. Electrochem.
Doc-Delivery-Number	602EU