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CHARACTERIZATION OF SURFACE DEFECTS THROUGH THE MODIFICATION OF THE INFRARED PROFILE OF ADMOLECULES: APPLICATION TOCOMOLECULES ADSORBED ON (100)MgOANDNaClSURFACES

Author

Listed:
  • HANEN ZORGATI

    (Département de Physique, Université de Monastir, Faculté des Sciences de Monastir, UR 1319, Monastir, Tunisia)

  • MONCEF SAID

    (Département de Physique, Université de Monastir, Faculté des Sciences de Monastir, UR 1319, Monastir, Tunisia)

  • CHRISTOPHE RAMSEYER

    (Laboratoire de Physique Moléculaire, UMR 6624, Université de Franche-Comté, 25030 Besançon, France)

  • CLAUDE GIRARDET

    (Laboratoire de Physique Moléculaire, UMR 6624, Université de Franche-Comté, 25030 Besançon, France)

Abstract

Real surfaces display defects originating either from thermodynamic principles or from local instabilities. In order to help and characterize these surfaces and their defects, infrared spectroscopy of physisorbed test molecules can be used. As an example, we study the behavior of the infrared response ofCOmolecules randomly deposited on ionic surfaces ofMgOandNaClwith the concentration of dipolar defects randomly distributed on these surfaces. The vibrational peak is shifted and asymmetrically broadened when the defect concentration increases as a result of surface inhomogeneity, in semi-quantitative agreement with experimental data.

Suggested Citation

  • Hanen Zorgati & Moncef Said & Christophe Ramseyer & Claude Girardet, 2010. "CHARACTERIZATION OF SURFACE DEFECTS THROUGH THE MODIFICATION OF THE INFRARED PROFILE OF ADMOLECULES: APPLICATION TOCOMOLECULES ADSORBED ON (100)MgOANDNaClSURFACES," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 17(04), pages 431-436.
    • Handle: RePEc:wsi:srlxxx:v:17:y:2010:i:04:n:s0218625x1001420x
    DOI: 10.1142/S0218625X1001420X
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