Oxygen content, cobalt oxide exsolution and defect structure of the double perovskite PrBaCo2O6-delta / Tsvetkov D. S.,Ivanov I. L.,Malyshkin D. A.,Zuev A. Yu. // JOURNAL OF MATERIALS CHEMISTRY A. - 2016. - V. 4, l. 5. - P. 1962-1969.

ISSN/EISSN:

2050-7488 / 2050-7496

Type:

Article

Abstract:

Cobalt oxide exsolution as a result of reduction of A-site understoichiometric double perovskite Pr1-xBa1-xCo2O6-delta was found. The reasons for inconsistencies in the experimental data on oxygen content in PrBaCo2O6-delta reported by different authors were discussed. The step-like changes of the oxygen content of PrBaCo2O6-delta with pO(2) in the temperature range 1023-1173 K were shown to correspond to reduction of exsolved Co3O4 to CoO. The defect structure analysis of PrBaCo2O6-delta was carried out using the conventional Kroger-Vink approach. The model proposed for the defect structure of PrBaCo2O6-delta was shown to coincide completely with available data on the oxygen content and crystal structure of this double perovskite.

Author keywords:

HIGH-TEMPERATURE; ELEVATED-TEMPERATURES; OXIDATION-STATE; PRBACO2O5+DELTA; NONSTOICHIOMETRY; CHARGE; CRYSTAL; EQUILIBRIUM; PRESSURE; DELTA

DOI:

10.1039/c5ta08390g

Web of Science ID:

ISI:000368839200049

Соавторы в МНС:

Другие поля

Поле	Значение
Publisher	ROYAL SOC CHEMISTRY
Address	THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND
Language	English
EISSN	2050-7496
Keywords-Plus	HIGH-TEMPERATURE; ELEVATED-TEMPERATURES; OXIDATION-STATE; PRBACO2O5+DELTA; NONSTOICHIOMETRY; CHARGE; CRYSTAL; EQUILIBRIUM; PRESSURE; DELTA
Research-Areas	Chemistry; Energy \& Fuels; Materials Science
Web-of-Science-Categories	Chemistry, Physical; Energy \& Fuels; Materials Science, Multidisciplinary
Author-Email	Dmitry.Tsvetkov@urfu.ru
ResearcherID-Numbers	Zuev, Andrey/E-6220-2014 Ivanov, Ivan/E-7879-2017 Tsvetkov, Dmitry/N-2491-2016 Malyshkin, Dmitry/M-2195-2016
ORCID-Numbers	Ivanov, Ivan/0000-0001-9277-7543 Malyshkin, Dmitry/0000-0002-8828-4882
Funding-Acknowledgement	Russian Federation {[}MK-6206.2014.3, SP-3215.2015.1]; Ministry of Education and Science of Russian Federation {[}4.1039.2014/K]
Funding-Text	D. S. Tsvetkov acknowledges the project MK-6206.2014.3, I. L. Ivanov acknowledges the project SP-3215.2015.1 both funded by the President of the Russian Federation. D. A. Malyshkin acknowledges the Ministry of Education and Science of Russian Federation for financial support via the State Task No. 4.1039.2014/K.
Number-of-Cited-References	24
Usage-Count-Last-180-days	9
Usage-Count-Since-2013	38
Journal-ISO	J. Mater. Chem. A
Doc-Delivery-Number	DB9MC