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GROWTH AND ATOMIC STRUCTURE OF ULTRATHIN COBALT LAYERS ON THECu(111)FACE CLEAN AND PRECOVERED WITH LEAD

Author

Listed:
  • S. MRÓZ

    (Institute of Experimental Physics, University of Wrocław, pl. Maxa Borna 9, PL 50-204 Wrocław, Poland)

  • H. OTOP

    (Institute of Experimental Physics, University of Wrocław, pl. Maxa Borna 9, PL 50-204 Wrocław, Poland)

  • Z. JANKOWSKI

    (Institute of Experimental Physics, University of Wrocław, pl. Maxa Borna 9, PL 50-204 Wrocław, Poland)

Abstract

The growth and atomic structure of ultrathinColayers deposited on the cleanCu(111)face and precovered with about 0.7MLofPbwere investigated with the use of Auger electron spectroscopy and directional elastic peak electron spectroscopy (DEPES). Auger spectra for the cleanCu(111)face and covered with 1.5 ML ofCoindicate the growth of cobalt bilayer islands sunk at one-monolayer depth in the substrate and covered with one monolayer of copper. The ratio ofM2,3VVcobalt and copper Auger peak heights increases with cobalt coverage faster for thePb-precoveredCu(111)face than for the clean surface. DEPES profiles reveal the threefold symmetry of the cobalt layer up to 4.5 ML. For higher coverages, an arrangement of a sixfold symmetry appears, indicating the presence of fcc(111) cobalt domains rotated 60° with respect to the substrate (i.e. growing after a stacking fault abcbac) separated from the abcabc domains by the bcb layer with the hcp structure.

Suggested Citation

  • S. Mróz & H. Otop & Z. Jankowski, 1997. "GROWTH AND ATOMIC STRUCTURE OF ULTRATHIN COBALT LAYERS ON THECu(111)FACE CLEAN AND PRECOVERED WITH LEAD," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 4(06), pages 1273-1277.
    • Handle: RePEc:wsi:srlxxx:v:04:y:1997:i:06:n:s0218625x97001668
    DOI: 10.1142/S0218625X97001668
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