Influence of the ligands on 3d photoelectron spectra of the first four lanthanides

XPS characterisation of the interface between anode and electrolyte in a proton conducting solid oxide fuel cell

“…[10] This denotes the absence of chemical reaction with nickel, in agreement with a previous work. [11] The absence of visible differences in the Ni 3p peak between the nickel reference sample and the substrate under the thin PLD layer after the reduction treatment shows that no noticeable amount of oxidised nickel is present at the interface.…”

“…This difference is not attributed to the presence of oxidised nickel, as no shoulder typical for NiO is observed in the 70-73 eV BE range. Nor do we relate it to changes in the core hole screening of the nickel atoms due to charge transfer from the electrolyte, as this would mainly modify the proportion between the poorly screened d 9 final state in the energy range 69-75 eV BE and the well screened d 10 final state in the energy range 64-69 eV BE. [12] The origin of the observed change in the peak shape is still unknown.…”

XPS surface analyses of LaPO4 ceramics prepared by precipitation with or without excess of PO43−

“…The satellite energy separation E and intensity ratios of satellites and La 3d 5/2 are listed in Table 3 and are in good agreement with data for LaPO 4 reported earlier by Berthou and Jørgensen. 6 The larger E in the ion-etched surfaces, together with the higher satellite to peak ratio, indicate the formation of La 2 O 3 6 as a result of the preferential etching of phosphorus and oxygen.…”

Correlation between the electronic and atomic structure, transport properties, and oxygen vacancies on La0.7Ca0.3MnO3 thin films

“…The La 3d HAXPES spectra show the expected doublet corresponding to the spin-orbit splitting accompanied by satellites of comparable intensity. The intensity and separation of these satellites respect to the main peak, which are assigned to electron transfer process, [11][12][13] provide a fingerprint to identify the La (III) oxide compound. We have obtained an energy separation of 17.1 eV 6 0.1 eV between the 3d 3/2 and 3d 5/2 photoemission peaks and 4.2 eV 6 0.1 eV for the satellites, corresponding to the La 2 O 3 compound.…”