Loss of single-molecule-magnet behavior of a Mn12-based compound assembled in a monolayer

Magnetic circular dichroism magnetization measurements on a monolayer of single molecule magnets have been performed and the results are presented. At the measurement temperature (2 K) the hysteresis cycle shows no opening, contrary to what is seen in the bulk with SQUID magnetometry. This result co...

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Bibliographic Details
Published in:The European physical journal. B, Condensed matter physics Condensed matter physics, 2010, Vol.73 (1), p.103-108
Main Authors: Grumbach, N., Barla, A., Joly, L., Donnio, B., Rogez, G., Terazzi, E., Kappler, J.-P., Gallani, J.-L.
Format: Article
Language:English
Subjects:
Complex Systems
Condensed Matter Physics
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Fluid- and Aerodynamics
Magnetic properties and materials
Molecular magnets
Physics
Physics and Astronomy
Solid State and Materials
Solid State Physics
Studies of specific magnetic materials
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Summary:Magnetic circular dichroism magnetization measurements on a monolayer of single molecule magnets have been performed and the results are presented. At the measurement temperature (2 K) the hysteresis cycle shows no opening, contrary to what is seen in the bulk with SQUID magnetometry. This result could surprisingly imply that XMCD is unsuited for such measurements given the fact that it excites the core electrons at the origin of the magnetism. This result could also mean that the blocking temperature is greatly decreased or that these molecules loose their hallmark when deposited as adsorbed films, precluding therefore their much sought-after use in magnetic memories.
ISSN:1434-6028
1434-6036
DOI:10.1140/epjb/e2009-00430-x