Oxygen Content and Thermodynamic Stability of YBaCo2O6−δ Double Perovskite
Joint Authors
Sednev, Anton L.
Zuev, Andrey Yu
Tsvetkov, Dmitry S.
Source
Advances in Materials Science and Engineering
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-02-13
Country of Publication
Egypt
No. of Pages
6
Abstract EN
The thermodynamic stability of the double perovskite YBaCo2O6−δ was studied using the coulometric titration technique and verified by measurements of the overall conductivity depending on oxygen partial pressure at a given temperature.
As a result, the stability diagram of YBaCo2O6−δ was plotted.
YBaCo2O6−δ was found to be thermodynamically stable in air at 850°C and higher temperatures, whereas its thermodynamic stability at 900°C is limited by the range of oxygen partial pressures −3.56 ≤ log(pO2/atm) ≤ −0.14.
Oxygen content in YBaCo2O6−δ slightly decreases at 900°C from 5.035 at log(pO2/atm) = −0.14 to 4.989 in the atmosphere with log(pO2/atm) = −3.565 indicating a crucial role which variation of Co+3/Co+2 ratio plays in its stability.
YBaCo2O6−δ decomposes into the mixture of YCoO3 and BaCoO3−z at the high pO2 stability limit, whereas YBaCo4O7, BaCo1−xYxO3−γ, and Y2O3 were identified as the products of its decomposition at the low pO2 one.
American Psychological Association (APA)
Sednev, Anton L.& Zuev, Andrey Yu& Tsvetkov, Dmitry S.. 2018. Oxygen Content and Thermodynamic Stability of YBaCo2O6−δ Double Perovskite. Advances in Materials Science and Engineering،Vol. 2018, no. 2018, pp.1-6.
https://search.emarefa.net/detail/BIM-1119605
Modern Language Association (MLA)
Sednev, Anton L.…[et al.]. Oxygen Content and Thermodynamic Stability of YBaCo2O6−δ Double Perovskite. Advances in Materials Science and Engineering No. 2018 (2018), pp.1-6.
https://search.emarefa.net/detail/BIM-1119605
American Medical Association (AMA)
Sednev, Anton L.& Zuev, Andrey Yu& Tsvetkov, Dmitry S.. Oxygen Content and Thermodynamic Stability of YBaCo2O6−δ Double Perovskite. Advances in Materials Science and Engineering. 2018. Vol. 2018, no. 2018, pp.1-6.
https://search.emarefa.net/detail/BIM-1119605
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1119605