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Impact of ambient oxygen on the surface structure of α-Cr2O3(0001)
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Bikondoa, Oier, Moritz, W., Torrelles, X., Kim, Hee-Joung, Thornton, G. and Lindsay, R. (Robert) (2010) Impact of ambient oxygen on the surface structure of α-Cr2O3(0001). Physical Review B (Condensed Matter and Materials Physics), Vol.81 (No.20). Article 5439. doi:10.1103/PhysRevB.81.205439 ISSN 1098-0121.
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Official URL: http://dx.doi.org/10.1103/PhysRevB.81.205439
Abstract
Surface x-ray diffraction has been employed to quantitatively assess the surface structure of α-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 1×10−2 mbar, the surface is determined to be terminated by chromyl species (CrO), clearly demonstrating that the presence of oxygen can significantly influence the structure of α-Cr2O3(0001).
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QC Physics | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Library of Congress Subject Headings (LCSH): | X-rays -- Diffraction, Surfaces (Physics) -- Research, Oxide coating -- Research, Adsorption -- Research | ||||
Journal or Publication Title: | Physical Review B (Condensed Matter and Materials Physics) | ||||
Publisher: | American Physical Society | ||||
ISSN: | 1098-0121 | ||||
Official Date: | 26 May 2010 | ||||
Dates: |
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Volume: | Vol.81 | ||||
Number: | No.20 | ||||
Page Range: | Article 5439 | ||||
DOI: | 10.1103/PhysRevB.81.205439 | ||||
Status: | Peer Reviewed | ||||
Access rights to Published version: | Open Access (Creative Commons) | ||||
Funder: | Engineering and Physical Sciences Research Council (EPSRC), Spain. Ministerio de Ciencia e Innovación (MICINN), European Union (EU) | ||||
Grant number: | CSD2007-00041 (MICINN), MAT2009-09308 (MICINN) |
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