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Article Dans Une Revue Surface Science : A Journal Devoted to the Physics and Chemistry of Interfaces Année : 1997

LEED study of activated nitrogen adsorption on (100) and (h11) faces of copper

M Sotto
  • Fonction : Auteur
S Gauthier
  • Fonction : Auteur
F Pourmir
  • Fonction : Auteur
S Rousset
J Klein
  • Fonction : Auteur

Résumé

LEED observations on nitrogen adsorbed on (h11) stepped and (100) copper faces have shown the existence of two surface phases with a first order transition. The first one corresponds, on the (100) face, to the formation of an ordered stepped overlayer composed of alternating square c(2 x 2)N island and bare copper of [100] atomic rows and on the (h11) stepped faces, to an unusual nitrogen induced faceting into (100) and (h'11) facets: the terrace width of these (h'11) facets decreases with coverages and a (h11) stepped face (h = 65 +/- 4) with large (100) terrace widths is observed. The second phase, in the ultimate state of adsorption might correspond to the formation of a copper nitride surface layer in epitaxy on all the copper faces under investigation.
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Dates et versions

hal-01987617 , version 1 (21-01-2019)

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  • HAL Id : hal-01987617 , version 1

Citer

M Sotto, S Gauthier, F Pourmir, S Rousset, J Klein. LEED study of activated nitrogen adsorption on (100) and (h11) faces of copper. Surface Science : A Journal Devoted to the Physics and Chemistry of Interfaces, 1997, 371 (1), pp.36-44. ⟨hal-01987617⟩
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