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Publication Detail
Impact of ambient oxygen on the surface structure of alpha-Cr2O3(0001)
  • Publication Type:
    Journal article
  • Publication Sub Type:
    Article
  • Authors:
    Bikondoa O, Moritz W, Torrelles X, Kim HJ, Thornton G, Lindsay R
  • Publisher:
    AMER PHYSICAL SOC
  • Publication date:
    15/05/2010
  • Journal:
    PHYS REV B
  • Volume:
    81
  • Issue:
    20
  • Article number:
    205439
  • Print ISSN:
    1098-0121
  • Language:
    EN
  • Keywords:
    AB-INITIO, CR2O3, DIFFRACTION, V2O3(0001), ADSORPTION, ENERGY
  • Addresses:
    Lindsay, R
    Univ Manchester
    Sch Mat
    Ctr Corros & Protect
    Manchester
    M13 9PL
    Lancs
    England

    Univ Warwick
    Dept Phys
    Coventry
    CV4 7AL
    W Midlands
    England

    Seoul Natl Univ
    Ctr OLED
    Seoul
    151744
    South Korea

    UCL
    Dept Chem
    London
    WC1H 0AH
    England
Abstract
Surface x-ray diffraction has been employed to quantitatively assess the surface structure of alpha-Cr2O3(0001) as a function of oxygen partial pressure at room temperature. In ultrahigh vacuum, the surface is found to exhibit a partially occupied double layer of chromium atoms. At an oxygen partial pressure of 1 x 10(-2) mbar, the surface is determined to be terminated by chromyl species (Cr=O), clearly demonstrating that the presence of oxygen can significantly influence the structure of alpha-Cr2O3(0001)
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