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Depth-dependent magnetism in epitaxial MnSb thin films : effects of surface passivation and cleaning
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Aldous, James D., Burrows, Christopher W., Maskery, I. (Ian), Brewer, M. S. (Matt S.), Hase, Thomas P. A., Duffy, J. A., Lees, Martin R., Sanchez-Hanke, Cecilia, Decoster, T., Theis, W., Quesada, A., Schmid, A. K. and Bell, Gavin R. (2012) Depth-dependent magnetism in epitaxial MnSb thin films : effects of surface passivation and cleaning. Journal of Physics: Condensed Matter, Vol.24 (No.14). p. 146002. doi:10.1088/0953-8984/24/14/146002 ISSN 0953-8984.
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WRAP_Bell_MnSb-IoP-reffed.pdf - Accepted Version Download (709Kb) |
Official URL: http://dx.doi.org/10.1088/0953-8984/24/14/146002
Abstract
Depth-dependent magnetism in MnSb(0001) epitaxial films has been studied by combining experimental methods with different surface specificities: polarized neutron reflectivity, x-ray magnetic circular dichroism (XMCD), x-ray resonant magnetic scattering and spin-polarized low energy electron microscopy (SPLEEM). A native oxide ~4.5 nm thick covers air-exposed samples which increases the film's coercivity. HCl etching efficiently removes this oxide and in situ surface treatment of etched samples enables surface magnetic contrast to be observed in SPLEEM. A thin Sb capping layer prevents oxidation and preserves ferromagnetism throughout the MnSb film. The interpretation of Mn L3,2 edge XMCD data is discussed.
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): | Magnetism, Epitaxy, Thin films, Transition metals | ||||
Journal or Publication Title: | Journal of Physics: Condensed Matter | ||||
Publisher: | Institute of Physics Publishing Ltd. | ||||
ISSN: | 0953-8984 | ||||
Official Date: | 2012 | ||||
Dates: |
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Volume: | Vol.24 | ||||
Number: | No.14 | ||||
Page Range: | p. 146002 | ||||
DOI: | 10.1088/0953-8984/24/14/146002 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access | ||||
Date of first compliant deposit: | 20 December 2015 | ||||
Date of first compliant Open Access: | 20 December 2015 | ||||
Funder: | Engineering and Physical Sciences Research Council (EPSRC), United States. Dept. of Energy | ||||
Grant number: | EP/H041222/1 (EPSRC), DE-AC02-98CH10886 (DoE), DEAC02-05CH11231 (DoE) |
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