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The influence of weak links on magnetic ordering in layered structures

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Hjorvarsson, Bjorgvin, Kudasov, Yu., Wolff, M., Hase, Thomas P. A., Chacon, C., Kampen, M. van, Nordblad, P., Liebig, A. and Zabel, H. (Hartmut), 1946-. (2008) The influence of weak links on magnetic ordering in layered structures. EPL (Europhysics Letters), Vol.81 (No.1). p. 17008. ISSN 0295-5075

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Abstract

We discuss the magnetic ordering in layered magnets with two different inherent ordering temperatures. A [V(12 ML)Fe(2 ML)/V(12 ML)(/Fe(3 ML)]70 superlattice with antiferromagnetic interlayer exchange coupling is used for this purpose. The more rapid decrease of the magnetic moment in the 2 monolayer thick Fe layers influences the ordering in a non-trivial way. A distribution of the effective ordering temperature is inferred, originating from a more rapid decrease of the magnetic moment in the near-surface region, as compared to the interior of the sample. The results clearly demonstrate the need to consider all energy and length scales when addressing ordering in materials with finite extension.

Item Type: Journal Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Science > Physics
Library of Congress Subject Headings (LCSH): Order-disorder models, Magnetism
Journal or Publication Title: EPL (Europhysics Letters)
Publisher: Institute of Physics Publishing Ltd.
ISSN: 0295-5075
Date: 2008
Volume: Vol.81
Number: No.1
Page Range: p. 17008
Identification Number: 10.1209/0295-5075/81/17008
Status: Peer Reviewed
Publication Status: Published
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URI: http://wrap.warwick.ac.uk/id/eprint/39717

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