Email this article Study of the oxygen exchange kinetics in the nonstoichiometric oxide SrFeO3–δ under isostoichiometric conditions using the oxygen partial pressure relaxation technique
- Authors: Bychkov S.F.1, Popov M.P.1, Nemudry A.P.1,2
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Affiliations:
- Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch
- National Research Novosibirsk State University
- Issue: Vol 57, No 5 (2016)
- Pages: 697-703
- Section: Article
- URL: https://journals.rcsi.science/0023-1584/article/view/162744
- DOI: https://doi.org/10.1134/S0023158416050050
- ID: 162744
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Abstract
The kinetics of oxygen exchange in the nonstoichiometric strontium ferrite SrFeO3–δ with the structure of cubic perovskite was studied by the oxygen partial pressure relaxation technique in the isostoichiometric regime at temperatures of 500–900°C in a range of δ from 0.24 to 0.44. An increase in the oxygen nonstoichiometry δ was accompanied by a decrease in the rate of sample relaxation and by an increase in the apparent activation energy of oxygen exchange.
About the authors
S. F. Bychkov
Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch
Email: nemudry@solid.nsc.ru
Russian Federation, Novosibirsk, 630128
M. P. Popov
Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch
Email: nemudry@solid.nsc.ru
Russian Federation, Novosibirsk, 630128
A. P. Nemudry
Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch; National Research Novosibirsk State University
Author for correspondence.
Email: nemudry@solid.nsc.ru
Russian Federation, Novosibirsk, 630128; Novosibirsk, 630090
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