Composition and structure of Cu3Pt(001) : A (1 × 1) Cu termination with c(2 × 2) underlayer ordering

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)23-31
Journal / PublicationSurface Science
Volume406
Issue number1-3
Publication statusPublished - 31 May 1998
Externally publishedYes

Abstract

The composition and structure of the (001) oriented surface of the ordered alloy Cu3Pt were investigated by low-energy Li+ and He+ ion scattering, and low-energy electron diffraction. The clean and well-annealed surface exhibited a c(2 × 2) LEED pattern. We present evidence that the c(2 × 2) structure corresponds to an ordered c(2 × 2) Cu-Pt second layer below a (1 × 1) Cu termination. Using Li+ ions, from analysis of the Cu and Pt critical shadowing edges, the first interlayer spacing was determined to be contracted by about 3%. The results are discussed on the basis of surface segregation and ordering effects. © 1998 Elsevier Science B.V. All rights reserved.

Research Area(s)

  • Alloys, Copper, Low energy ion scattering, Low index single crystal surfaces, Platinum, Surface segregation, Surface structure, morphology, roughness, and topography

Citation Format(s)

Composition and structure of Cu3Pt(001) : A (1 × 1) Cu termination with c(2 × 2) underlayer ordering. / Shen, Y. G.; O'Connor, D. J.; Wandelt, K.

In: Surface Science, Vol. 406, No. 1-3, 31.05.1998, p. 23-31.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review