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V-doped TiO2(110) : quantitative structure determination using energy scanned photoelectron diffraction
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Duncan, David A., Kreikemeyer Lorenzo, D., Primorac, E., Karslioğlu, O., Naschitzki, M., Unterberger, W. (Werner), Kuhlenbeck, H. and Woodruff, D. P. (2014) V-doped TiO2(110) : quantitative structure determination using energy scanned photoelectron diffraction. Surface Science, Volume 630 . pp. 64-70. doi:10.1016/j.susc.2014.07.002 ISSN 0039-6028.
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Official URL: http://dx.doi.org/10.1016/j.susc.2014.07.002
Abstract
The surface structure of a novel vanadium-titanium dioxide epitaxial film (Ti1-xVxO2, x ~ 0.2) has been explored using V4+ 2p and Ti4+ 2p energy-scanned photoelectron diffraction (PhD). The determined structure is a rutile TiO2(110)-like surface, with V atoms substitutionally replacing some Ti atoms. The results show no evidence for significant preferential occupation by V atoms of any specific surface or sub-surface sites. LEED shows a (1x2) reconstruction to be present on the surface, and the PhD simulations do favour this being the dominant surface termination, although the reliability factor for simulations for a (1x1) termination falls just within the variance of the value for the preferred (1x2) structure. The V3+ and Ti3+ species were observed to occupy the same sites as the V4+ and Ti4+ species; V5+ species do not appear to occupy a single well-defined structural site.
Item Type: | Journal Article | ||||||||||
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Subjects: | Q Science > QC Physics Q Science > QD Chemistry |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||||
Library of Congress Subject Headings (LCSH): | Surface chemistry, Epitaxy, Vanadium oxide, Thin films | ||||||||||
Journal or Publication Title: | Surface Science | ||||||||||
Publisher: | Elsevier BV | ||||||||||
ISSN: | 0039-6028 | ||||||||||
Official Date: | December 2014 | ||||||||||
Dates: |
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Volume: | Volume 630 | ||||||||||
Number of Pages: | 7 | ||||||||||
Page Range: | pp. 64-70 | ||||||||||
DOI: | 10.1016/j.susc.2014.07.002 | ||||||||||
Status: | Peer Reviewed | ||||||||||
Publication Status: | Published | ||||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||||
Copyright Holders: | publisher | ||||||||||
Date of first compliant deposit: | 28 December 2015 | ||||||||||
Date of first compliant Open Access: | 28 December 2015 | ||||||||||
Funder: | Science Research Investment Fund (SRIF), Deutsche Forschungsgemeinschaft (DFG) | ||||||||||
Grant number: | 546 (DFG) |
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