Figure 2
From: Electrical transport properties and Kondo effect in La1−xPrxNiO3−δ thin films

XPS spectra at the Ni 3p edge of the films with (a) x = 0.0, (b) x = 0.1, (c) x = 0.3, and (d) x = 0.6. The blue (red) solid and dashed lines represent the fitted curves of the Ni3+ (Ni2+) and satellite peaks, respectively.