Oxygen content and thermodynamic stability of YBaCo4O7 +/- delta / Tsvetkov Dmitry S.,Pralong Valerie,Tsvetkova Nadezhda S.,Zuev Andrey Yu. // SOLID STATE IONICS. - 2015. - V. 278, l. . - P. 1-4.

ISSN/EISSN:

0167-2738 / 1872-7689

Type:

Article

Abstract:

YBaCo4O7 +/- delta was found to be thermodynamically stable in air at T > 900 degrees C whereas its thermodynamic stability at 950 degrees C is limited by the range of oxygen partial pressures -5.05 log(pO(2)/atm) <= -0.5. Oxygen content in YBaCo4O7 +/- delta at 950 degrees C slightly decreases from 7.009 at log(pO(2)/atm) = -0.5 to 6.953 in the atmosphere with log(pO(2)/atm) = 5.05. YBaCo4O7 +/- delta decomposes into the mixture of YCoO3-delta, BaCoO3-delta and Co3O4 at 950 degrees C in atmosphere with log(pO(2)/atm) > -0.5 whereas in atmosphere with log(pO(2)/atm) < -5.05 Y2BaCoO5, BaCoO2 and CoO were identified as the products of YBaCo4O7 +/- delta decomposition. (C) 2015 Elsevier B.V. All rights reserved.

Author keywords:

Oxygen content; 114; YBaCo4O7; Thermodynamic stability ADSORPTION PROPERTIES; TEMPERATURE

DOI:

10.1016/j.ssi.2015.05.004

Web of Science ID:

ISI:000359887700001

Соавторы в МНС:

Другие поля

Поле	Значение
Month	OCT 1
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
EISSN	1872-7689
Keywords-Plus	ADSORPTION PROPERTIES; TEMPERATURE
Research-Areas	Chemistry; Physics
Web-of-Science-Categories	Chemistry, Physical; Physics, Condensed Matter
Author-Email	Dmitry.Tsvetkov@urfu.ru
ResearcherID-Numbers	Tsvetkov, Dmitry/N-2491-2016 Zuev, Andrey/E-6220-2014
Funding-Acknowledgement	Russian Foundation for Basic Research {[}13-03-01031]
Funding-Text	This work was supported by the Russian Foundation for Basic Research (grant No. 13-03-01031).
Number-of-Cited-References	11
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	19
Journal-ISO	Solid State Ion.
Doc-Delivery-Number	CP4YE