Abstract:It has been shown by X-ray photoelectron spectroscopy that Ni3+ species are present in the chemisorbed overlayer formed at a Ni(100) surface by the interaction of co-adsorbed water and oxygen; the concentration of Ni3+ is estimated to be about 6 x 1014 cm-2 at 297 K and the species have a characteristic Ni(2p3/*) binding energy of 856 eV and an associated satellite peak at 862 eV.
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