Structure determination of Ni(110)-(2 × 3)-N by use of SEXAFS measurements: 
on-surface and sub-surface sites on a pseudo-(100) reconstructed surface

Wilde, Lutz; Pangher, Nicola; Haase, J.

doi:10.1016/0039-6028(94)91211-4

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Structure determination of Ni(110)-(2 × 3)-N by use of SEXAFS measurements: on-surface and sub-surface sites on a pseudo-(100) reconstructed surface

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Wilde, Lutz
Fritz Haber Institute, Max Planck Society;

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Pangher, Nicola
Fritz Haber Institute, Max Planck Society;

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Haase, J.
Fritz Haber Institute, Max Planck Society;

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Citation

Wilde, L., Pangher, N., & Haase, J. (1994). Structure determination of Ni(110)-(2 × 3)-N by use of SEXAFS measurements: on-surface and sub-surface sites on a pseudo-(100) reconstructed surface. Surface Science, 316(3), L1093-L1098. doi:10.1016/0039-6028(94)91211-4.

Cite as: https://hdl.handle.net/21.11116/0000-0009-A138-2

Abstract

Surface-extended X-ray-absorption fine-structure measurements have been performed on the Ni(110)-(2 × 3)-N system. The data are consistent with a model in which nitrogen chemisorbs on a pseudo-(100) reconstructed and largely corrugated surface with a nearest-neighbour N-Ni bond length of 1.86 ± 0.03 Å. The corrugation results in two raised and two lowered [110] Ni rows which are not uniformly distributed in the [001] direction. Nitrogen chemisorbs in four-fold hollow sites slightly (0.19Å) above the lowered Ni rows and in pseudo-four-fold hollow sites slightly (0.38 Å) below the plane defined by a raised and a lowered Ni row. In both sites N is equidistantly bonded to Ni atoms in the second layer. Structural models with long-bridge adsorption sites can be safely excluded.