Surface-sandwich segregation on nondilute bimetallic alloys: and probed by low-energy electron diffraction
- 15 May 1985
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 31 (10), 6216-6218
- https://doi.org/10.1103/physrevb.31.6216
Abstract
A short-wave large-amplitude compositional oscillation versus depth at the (111) surface of and alloys is observed by means of low-energy electron diffraction (LEED). In the LEED calculation, the substitutional disorder of the alloys is successfully mimicked by the averaged t-matrix approximation. The occurrence of a well-developed Pt-Ni surface sandwich on top of the Pt-Ni alloys is interesting in view of the chemisorptive and catalytic properties of these alloys.
Keywords
This publication has 17 references indexed in Scilit:
- Surface reactivity of platinum-nickel single crystal alloys: Carbon monoxide adsorptionSurface Science, 1983
- Surface segregation of chromium in a Fe72Cr28(110) crystalSurface Science, 1983
- On the choice of local exchange-correlation potential for LEED. Application to Cu (111)Journal of Physics C: Solid State Physics, 1983
- Surface segregation of a Pt–Au alloy: An atom-probe field ion microscope investigationThe Journal of Chemical Physics, 1980
- Quantitative prediction of surface segregationJournal of Catalysis, 1979
- Absolute Composition Depth Profile of a NiCu Alloy in a Surface Segregation StudyPhysical Review Letters, 1979
- Random Occupation of Adsorption Sites in theStructure of CO on Fe{001}Physical Review Letters, 1978
- Surface segregation in Cu-Ni and Cu-Pt alloys; A comparison of low-energy ion-scattering results with theorySurface Science, 1978
- Layer-by-layer low-energy electron diffraction and two-dimensional space group symmetryJournal of Physics C: Solid State Physics, 1976
- Explicit local exchange-correlation potentialsJournal of Physics C: Solid State Physics, 1971