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Oxidation Behavior of a Fe/MnO Ultrathin Film Studied by XPS

Author

Listed:
  • V. Di Castro

    (Department of Chemistry, University "La Sapienza," P. Aldo Moro 5, 00185 Roma, Italy)

  • S. Ciampi

    (Department of Chemistry, University "La Sapienza," P. Aldo Moro 5, 00185 Roma, Italy)

  • L. Sestili

    (Department of Chemistry, University "La Sapienza," P. Aldo Moro 5, 00185 Roma, Italy)

Abstract

The oxidation of a 9-Å-thick iron layer on MnO at room temperature has been investigated by X-ray photoelectron spectroscopy. By exposure toO2, iron is oxidized first to Fe(II) and then to Fe(III). During the oxide formation a fast oxygen adsorption and initial oxidation to Fe(II) is followed by a slower oxygen incorporation and Fe(III) formation. After exposure to 1500L O2Fe3O4seems to be formed at the surface, while the iron layer is not completely oxidized.

Suggested Citation

  • V. Di Castro & S. Ciampi & L. Sestili, 1998. "Oxidation Behavior of a Fe/MnO Ultrathin Film Studied by XPS," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 5(01), pages 393-396.
    • Handle: RePEc:wsi:srlxxx:v:05:y:1998:i:01:n:s0218625x98000724
    DOI: 10.1142/S0218625X98000724
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