LEED INVESTIGATION OF THE PbAND SbULTRATHIN LAYERS DEPOSITED ON THENi(111)FACE ATT=150–900K

A. Krupski () and S. Mróz
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A. Krupski: Institute of Experimental Physics, University of Wrocław, pl. Maxa Borna 9, 50-204 Wrocław, Poland
S. Mróz: Institute of Experimental Physics, University of Wrocław, pl. Maxa Borna 9, 50-204 Wrocław, Poland

Surface Review and Letters (SRL), 2003, vol. 10, issue 06, 843-848

Abstract: The atomic structure of ultrathin lead and antimony layers deposited on theNi(111)face in ultrahigh vacuum at a substrate temperature ranging from 150 to 900 K was investigated with the use of low-energy electron diffraction (LEED). LEED patterns corresponding to p(1×1), p(3×3), p(4×4),$p(\sqrt{3}\times\sqrt{3})R30^\circ$structures and p(1×1), p(2×2),$(\sqrt{\frac{16}{7}}\times\sqrt{\frac{16}{7}})R(\pm 19.1^\circ)$,$p(\sqrt{3}\times\sqrt{3})R30^\circ$structures for the adsorption of Pb and Sb, respectively, on theNi(111)face were observed. Experimental LEED intensity-versus-energy[I(V)]spectra have been collected for the cleanNi(111)and for the$p(\sqrt{3}\times\sqrt{3})R30^\circ \hbox{-Pb/Ni(111)}$,$p(\sqrt{3}\times \sqrt{3})R30^\circ\hbox{-Sb/Ni(111)}$,$(\sqrt{\frac{16}{7}}\times\sqrt{\frac{16}{7}})R(\pm 19.1^\circ) \hbox{-Sb/Ni(111)}$structures. TheI(V)curves obtained for the cleanNi(111)structure are in good agreement with experimental spectra from the literature.

Keywords: Nickel (111); lead; antimony; adsorbate atomic structure; low-energy electron diffraction (LEED); I(V)-LEED spectra; surface alloy; 61.14.Hg (search for similar items in EconPapers)
Date: 2003
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DOI: 10.1142/S0218625X03005773

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