Issue 4, 2014

Influence of the Ba2+/Sr2+ content and oxygen vacancies on the stability of cubic BaxSr1−xCo0.75Fe0.25O3−δ

Abstract

We present a theoretical and experimental study on the influence of the Ba/Sr and Co/Fe ratios as well as the oxygen-non-stoichiometry on the stability of Ba0.5Sr0.5Co0.8Fe0.2O3−δ (BSCF). Thin-layer depositions are analysed by looking at TEM images and EDX spectra. Bond-analytical calculations are performed to explain the stability difference between hexagonal and cubic BSCF. Finally, annealing experiments analysed using XRD give an insight into the differences of phase-fraction growth with respect to the Ba/Sr ratio.

Graphical abstract: Influence of the Ba2+/Sr2+ content and oxygen vacancies on the stability of cubic BaxSr1−xCo0.75Fe0.25O3−δ

Article information

Article type
Communication
Submitted
18 Sep 2013
Accepted
18 Nov 2013
First published
20 Nov 2013

Phys. Chem. Chem. Phys., 2014,16, 1333-1338

Influence of the Ba2+/Sr2+ content and oxygen vacancies on the stability of cubic BaxSr1−xCo0.75Fe0.25O3−δ

M. Lumeij, M. Gilleßen, H. Bouwmeester, T. Markus, J. Barthel, S. Roitsch, J. Mayer and R. Dronskowski, Phys. Chem. Chem. Phys., 2014, 16, 1333 DOI: 10.1039/C3CP53958J

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