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ON THE CONSPICUOUS SEGREGATION BEHAVIOR ATPt–RhSURFACES

Author

Listed:
  • C. CREEMERS

    (Fysico-chemisch Laboratorium, Katholieke Universiteit Leuven, W. de Croylaan 46, B-3001 Leuven, Belgium)

  • S. HELFENSTEYN

    (Fysico-chemisch Laboratorium, Katholieke Universiteit Leuven, W. de Croylaan 46, B-3001 Leuven, Belgium)

  • J. LUYTEN

    (Fysico-chemisch Laboratorium, Katholieke Universiteit Leuven, W. de Croylaan 46, B-3001 Leuven, Belgium)

  • M. SCHURMANS

    (Fysico-chemisch Laboratorium, Katholieke Universiteit Leuven, W. de Croylaan 46, B-3001 Leuven, Belgium)

  • H. H. BRONGERSMA

    (Faculty of Applied Physics, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands)

Abstract

Phase demixing is evaluated as a possible explanation for the anomalous temperature dependence of thePtsegregation at thePt50Rh50(511),Pt25Rh75(110)andPt25Rh75(100)surfaces. Calculations are performed in the quasichemical approximation and a broken bond scheme. Although the calculations based on systematic demixing tend to overestimate the surface enrichment, the qualitative agreement appears to be rather good.

Suggested Citation

  • C. Creemers & S. Helfensteyn & J. Luyten & M. Schurmans & H. H. Brongersma, 2004. "ON THE CONSPICUOUS SEGREGATION BEHAVIOR ATPt–RhSURFACES," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 11(03), pages 341-348.
    • Handle: RePEc:wsi:srlxxx:v:11:y:2004:i:03:n:s0218625x04006153
    DOI: 10.1142/S0218625X04006153
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