Fig. 10

(a) XPS spectra of BCF4 sample (b) Ba3d peak analysis for BCF4 (c) Fe2p peak analysis for BCF4 (d) O1s peak analysis for BCF4 (e) Co2p peak analysis for BCF4 (f) C1s peak analysis for BCF4.
(a) XPS spectra of BCF4 sample (b) Ba3d peak analysis for BCF4 (c) Fe2p peak analysis for BCF4 (d) O1s peak analysis for BCF4 (e) Co2p peak analysis for BCF4 (f) C1s peak analysis for BCF4.