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Segregation of Pt at clean surfaces of (Pt, Ni)3Al |
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| Authors: | F. Qin C. Jiang J.W. Anderegg B. Gleeson D.J. Sordelet |
| Affiliation: | a Department of Chemistry, Iowa State University, Ames, IA 50011, USA b Department of Materials Science and Engineering, Iowa State University, Ames, IA 50011, USA c Ames Laboratory, Iowa State University, Ames, IA 50011, USA |
| 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. |
| Keywords: | Surface segregation Density functional calculations Auger electron spectroscopy Nickel aluminide X-ray photoelectron spectroscopy Low energy ion scattering (LEIS) Low energy electron diffraction (LEED) Platinum |
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