title: Influence of the Ba2+/Sr2+ content and oxygen vacancies on the stability of cubic Ba(x)Sr(1-x)Co(0.75)Fe(0.25)O(3-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.
authors: Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, D-52056 Aachen, Germany. drons@HAL9000.ac.rwth-aachen.de.
authors: Marck
authors: M
authors: Lumeij
authors: Michael
authors: M
authors: Gillessen
authors: Henny
authors: H
authors: Bouwmeester
authors: Torsten
authors: T
authors: Markus
authors: Juri
authors: J
authors: Barthel
authors: Stefan
authors: S
authors: Roitsch
authors: Joachim
authors: J
authors: Mayer
authors: Richard
authors: R
authors: Dronskowski