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Al2O3α Surface Structure Characterization by RHEED

Author

Listed:
  • M. Gillet

    (Laboratoire SERMEC, Faculté des Sciences et Techniques de Saint-Jérôme, 13397 Marseille cedex 20, France)

  • J. C. Bruna

    (Laboratoire SERMEC, Faculté des Sciences et Techniques de Saint-Jérôme, 13397 Marseille cedex 20, France)

Abstract

The morphology of αAl2O3surfaces annealed in vacuum has been investigated by reflection high energy electron diffraction (RHEED). We have studied two kinds of faces: (0001) and$(\bar{1}012)$. The two faces behave differently. At high temperature the (0001) surface is unstable with only small facets and give evidence for variations of stoichiometry and structure with formation of an Al layer. The$(\bar{1}012)$surfaces give large facets and the diffraction patterns are consistent with (2 × 1) surface structure.

Suggested Citation

  • M. Gillet & J. C. Bruna, 1998. "Al2O3α Surface Structure Characterization by RHEED," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 5(01), pages 325-329.
    • Handle: RePEc:wsi:srlxxx:v:05:y:1998:i:01:n:s0218625x98000608
    DOI: 10.1142/S0218625X98000608
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