Study and optimization of the synthesis routine of the single phase YBaCo 2 O 6-δ  double perovskite

A. L. Sednev; D. S. Tsvetkov

doi:10.15826/chimtech/2017.4.3.03

Study and optimization of the synthesis routine of the single phase YBaCo₂O_6-δ double perovskite

A. L. Sednev, D. S. Tsvetkov

Abstract

The chemical interaction of YCoO_3-δ and BaCoO_3-δ with formation of double perovskite was studied depending on temperature and oxygen partial pressure. The stability of YCoO₃ was shown to have а crucial influence on the kinetics and mechanism of YBaCo₂O_6-δ formation. It was found that at 1000 °C in air, i.e. under conditions when YCoO₃ is unstable, the double perovskite YBaCo₂O_6-δ is formed much slower compared to the pure oxygen atmosphere where YCoO₃ is stable at the same temperature. Thus controlling YCoO₃ stability was shown to be the factor of key importance for optimal preparation of the YBaCo₂O_6-δ single phase.

Keywords

YBaCo2O6 synthesis, YCoO3 instability, pO2 acceleration, double perovskite synthesis, YBaCo2O5, YCoO3, BaCoO3

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References

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DOI: https://doi.org/10.15826/chimtech/2017.4.3.03

Copyright (c) 2017 A. L. Sednev, D. S. Tsvetkov

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