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Stoichiometry, contamination and microstructure of MnSb(0001) surfaces
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Hatfield, S. A., Aldous, James D. and Bell, Gavin R. (2009) Stoichiometry, contamination and microstructure of MnSb(0001) surfaces. Applied Surface Science, Vol.255 (No.6). pp. 3567-3575. doi:10.1016/j.apsusc.2008.09.082 ISSN 0169-4332.
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Official URL: http://dx.doi.org/10.1016/j.apsusc.2008.09.082
Abstract
The stoichiometry, microstructure and surface composition of MnSb have been investigated using X-ray photoelectron spectroscopy, electron diffraction and microscopy. Epitaxially grown samples were exposed to ambient air for several weeks and methods for preparing clean, stoichiometric and smooth surfaces were investigated. Air-stored sample surfaces are chemically stratified but dominated by Mn oxides 4-5 nm thick. These oxides are difficult to remove by ion bombardment and annealing (IBA), but a brief etch in HCl removes them very efficiently. It leaves the surface Sb-rich, and clean, smooth and stoichiometric surfaces are then readily recovered by IBA. These surfaces exhibit a (2 x 2) surface reconstruction with atomically. at terraces. This reconstruction can be reversibly changed to a (1 x 1) by Sb deposition and annealing. (C) 2008 Elsevier B.V. All rights reserved.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QD Chemistry T Technology > TA Engineering (General). Civil engineering (General) Q Science > QC Physics |
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| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
| Library of Congress Subject Headings (LCSH): | Surface contamination, Ferromagnetism, Semiconductors, Stoichiometry, Microstructure | ||||
| Journal or Publication Title: | Applied Surface Science | ||||
| Publisher: | Elsevier BV | ||||
| ISSN: | 0169-4332 | ||||
| Official Date: | 1 January 2009 | ||||
| Dates: |
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| Volume: | Vol.255 | ||||
| Number: | No.6 | ||||
| Number of Pages: | 9 | ||||
| Page Range: | pp. 3567-3575 | ||||
| DOI: | 10.1016/j.apsusc.2008.09.082 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Funder: | Engineering and Physical Sciences Research Council (EPSRC) | ||||
| Grant number: | EP/E025722/1 (EPSRC) |
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