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- W2058373312 abstract "The photoelectron spectroscopy (PES) study compares electronic states in three different ceria thin film surfaces prepared on a Cu(111) single-crystal surface by vapour deposition under different conditions: at 250 °C, at room temperature and finally Au-doped ceria film obtained by simultaneous deposition of Au and CeO2 at room temperature (RT). Electronic properties of the layers and interaction of gold with CeO2 were investigated using synchrotron-radiation-excited PES and resonant photoemission (Ce 4d → 4f transitions). We observed partial Ce4+ → Ce3+ reduction induced by the decrease of deposition temperature to RT instead of 250 °C and also by doping ceria with gold, accompanied by a 4f resonance enhancement of the Ce3+ species. In the case of the Au-doped sample the surface reduction degree is stronger and can be explained by the possible creation of a new ionic Au+ state observed in the Au 4f spectra." @default.
- W2058373312 created "2016-06-24" @default.
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- W2058373312 date "2009-08-01" @default.
- W2058373312 modified "2023-10-17" @default.
- W2058373312 title "A photoemission study of the ceria and Au-doped ceria/Cu(111) interfaces" @default.
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- W2058373312 doi "https://doi.org/10.1016/j.vacuum.2009.04.058" @default.
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