Figure 1.
(a) XRD patterns and (b) magnified parts of the as-synthesized BSCF and Ba1−xCFZY (x = 0–0.05) powders calcined at 1050°C for 10 h; (c) crystal structure schematic of a cubic perovskite oxide with the formula of ABO3; (d) crystal structure schematic of the Ba2+-deficient Ba1−xCFZY perovskite oxides.