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–The influence of oxygen molecules adsorbed on the surface of ytterbium nanofilms with a thickness of 16–200 single layers (6.1–76 nm) on the state of these films is studied. It is found that the adsorption of molecules is accompanied by the formation of an adjacent modified ytterbium layer. One of the features of the modified layer is that it contains trivalent ytterbium. The minimum thickness of this layer is estimated. It is 16 single layers (6.1 nm). Based on results previously obtained by us, it is suggested that the modified layer protects the ytterbium bulk from corrosion when exposed to air.
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Kuzmin, M.V., Mittsev, M.A. Formation of a Passivating Layer on the Surface of Metallic Ytterbium upon Oxygen-Molecule Adsorption. J. Surf. Investig. 14, 1044–1048 (2020). https://doi.org/10.1134/S1027451020050304
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DOI: https://doi.org/10.1134/S1027451020050304