Segregation of Pt at clean surfaces of (Pt, Ni)3Al

F. Qin, C. Jiang, J. W. Anderegg, C. J. Jenks, B. Gleeson, D. J. Sordelet, P. A. Thiel

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Abstract

Experimental evidence for surface segregation of Pt at (1 1 1) surfaces of ternary (Pt, Ni)3Al alloys is presented, based upon Auger electron spectroscopy, low energy ion scattering, and angle-resolved X-ray photoelectron spectroscopy. Density functional calculations in the dilute limit confirm that Pt segregation is energetically favored.

Original languageEnglish
Pages (from-to)376-380
Number of pages5
JournalSurface Science
Volume601
Issue number2
DOIs
StatePublished - Jan 15 2007
Externally publishedYes

Funding

This work was supported by the Director, Ames Laboratory, US Department of Energy, Contract No. W-405-Eng-82.

FundersFunder number
U.S. Department of EnergyW-405-Eng-82
Ames Laboratory

    Keywords

    • Auger electron spectroscopy
    • Density functional calculations
    • Low energy electron diffraction (LEED)
    • Low energy ion scattering (LEIS)
    • Nickel aluminide
    • Platinum
    • Surface segregation
    • X-ray photoelectron spectroscopy

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