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

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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 (CrO), clearly demonstrating that the presence of oxygen can significantly influence the structure of α-Cr2O3(0001).

Item Type:	Journal Article
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:	Date Event 26 May 2010 Published
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
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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