Fig. 3

XRD patterns of SFO nanofibers calcined at 800 oC at heating rates of 2 oC/min (NF21), 6 oC/min (NF22) and 10 oC/min (NF23).

XRD patterns of SFO nanofibers calcined at 800 oC at heating rates of 2 oC/min (NF21), 6 oC/min (NF22) and 10 oC/min (NF23).