Fig. 4: Oxidation state characterization. | Nature Communications

Fig. 4: Oxidation state characterization.

From: Unveiling the key factor for the phase reconstruction and exsolved metallic particle distribution in perovskites

Fig. 4: Oxidation state characterization.

a, b Fe K-edge X-ray absorption near-edge structure (XANES) spectra of Pr0.5Ba0.2Sr0.3FeO3−δ (A-PBSF30), (Pr0.5Ba0.2Sr0.3)2FeO4+δ (R-PBSF30) with two references (Fe foil and Fe2O3). c Fourier-transformed Fe K-edge extended X-ray absorption fine structure (EXAFS) spectra of A-PBSF30 and R-PBSF30. X-ray photoelectron spectra (XPS) of Fe 2p1/2 for d A-PBSF30 and e R-PBSF30.

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