Oxygen chemisorption and oxide formation on a Ni(111) surface have been monitored by using the near-edge x-ray-absorption fine-structure technique. The adsorption site of oxygen in the p(2×2) and (√3 × √3 )R30° superstructures has been determined by a multiple-scattering analysis. In both structures the oxygen occupies a threefold-coordinated fcc site with a nearest-neighbor O-Ni bond length of 1.85±0.05 Å on a Ni(111) surface relaxed outwards by ∼0.15 Å.
OXYGEN ON NI(111) - A MULTIPLE-SCATTERING ANALYSIS OF THE NEAR-EDGE X-RAY-ABSORPTION FINE-STRUCTURE / M., Pedio; L., Becker; B., Hillert; D'Addato, Sergio; J., Haase. - In: PHYSICAL REVIEW. B, CONDENSED MATTER. - ISSN 0163-1829. - STAMPA. - 41:(1990), pp. 7462-7466.
OXYGEN ON NI(111) - A MULTIPLE-SCATTERING ANALYSIS OF THE NEAR-EDGE X-RAY-ABSORPTION FINE-STRUCTURE
D'ADDATO, Sergio;
1990
Abstract
Oxygen chemisorption and oxide formation on a Ni(111) surface have been monitored by using the near-edge x-ray-absorption fine-structure technique. The adsorption site of oxygen in the p(2×2) and (√3 × √3 )R30° superstructures has been determined by a multiple-scattering analysis. In both structures the oxygen occupies a threefold-coordinated fcc site with a nearest-neighbor O-Ni bond length of 1.85±0.05 Å on a Ni(111) surface relaxed outwards by ∼0.15 Å.
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