Thermal stability of the cubic phase in Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCF)1

Fast Mapping of the Cobalt-Valence State in Ba0.5Sr0.5Co0.8Fe0.2O3-dby Electron Energy Loss Spectroscopy

“…to be 1.33, 0.51, 0.84 eV, respectively. The energy difference of 0.84 eV between the two lines with highest energy-loss intensities agrees rather well with the difference of the white-line distances of 0.95 eV for Co 2ϩ and Co 3ϩ~see Svarcová et al, 2008;Efimov et al, 2010;Mueller et al, 2010;Müller et al, 2010Müller et al, , 2012Niedrig et al, 2011!. It has been suggested by several groups~Arnold et al, 2009Harvey et al, 2009aHarvey et al, , 2009bEfimov et al, 2010!…”

“…For BSCF a transition to the hexagonal phase was reported under application-relevant conditions at temperatures Յ8408C~Arnold et al, 2007;Svarcová et al, 2008;Mueller et al, 2010;Müller et al, 2010Müller et al, , 2012Niedrig et al, 2011!. More recently~Müller et al, 2013 was found that a barium cobaltite phase~BCO-type phase!~Sun et al, David et al, 2011!…”

Structural and functional properties of SrTi 1−x Fe x O 3−δ (0 ⩽ x ⩽ 1) for the use as oxygen transport membrane

“…But, in case of applications with very low p O 2 , e.g. for BSCF below 10 À14 bar [9], the reduction of the B-cations leads to chemical decomposition of the perovskite lattice. In case of membrane reactors in addition to the low p O 2 aggressive gases such as CO, CH 4 , and CO 2 .…”

Strength and elastic modulus of lanthanum strontium cobalt ferrite membrane materials

“…Whereas the material with the highest reported flux [6] Ba 0.5 Sr 0.5 Co 0.8 Fe 0.2 O 3 À δ suffers from phase instabilities at elevated temperatures [7][8][9][10] and is not stable under CO 2 [11,12], the lanthanum strontium cobalt ferrite membrane materials, i.e. La x Sr 1 À x Co 0.2 Fe 0.8 O 3 À δ (LSCFX), appear to be more stable.…”