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Local structures around Co and Fe ions in (La0.6Sr0.4)(Co0.2Fe0.8) O3−δ (LSCF) with different oxygen ion content (3−δ:2.78∼3.00) were investigated by in–situ X–ray absorption spectroscopy (XAS) and first–principles density functional theory (DFT) calculations. The degrees of change in the pre–edges and white lines in the X–ray absorption near–edge structure of Fe ions were greater than those of Co...
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