Magnetic surfactants as molecular based-magnets with spin glass-like properties

This paper reports the use of muon spin relaxation spectroscopy to study how the aggregation behavior of magnetic surfactants containing lanthanide counterions may be exploited to create spin glass-like materials. Surfactants provide a unique approach to building in randomness, frustration and compe...

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Bibliographic Details
Published in:Journal of physics. Condensed matter 2016-05, Vol.28 (17), p.176002-176002
Main Authors: Brown, Paul, Smith, Gregory N, Hernández, Eduardo Padrón, James, Craig, Eastoe, Julian, Nunes, Wallace C, Settens, Charles M, Hatton, T Alan, Baker, Peter J
Format: Article
Language:English
Subjects:
Agglomeration
Architecture
Condensed matter
Frustration
Glass - chemistry
Lanthanides
Lanthanoid Series Elements - chemistry
Magnetic properties
magnetic surfactants
Magnets - chemistry
Micelles
molecular magnets
muon spin relaxation
Organometallic Compounds - chemistry
Quaternary Ammonium Compounds - chemistry
spin glass
Surface-Active Agents - chemistry
Surfactants
Tuning
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Summary:This paper reports the use of muon spin relaxation spectroscopy to study how the aggregation behavior of magnetic surfactants containing lanthanide counterions may be exploited to create spin glass-like materials. Surfactants provide a unique approach to building in randomness, frustration and competing interactions into magnetic materials without requiring a lattice of ordered magnetic species or intervening ligands and elements. We demonstrate that this magnetic behavior may also be manipulated via formation of micelles rather than simple dilution, as well as via design of surfactant molecular architecture. This somewhat unexpected result indicates the potential of using novel magnetic surfactants for the generation and tuning of molecular magnets.
ISSN:0953-8984
1361-648X
DOI:10.1088/0953-8984/28/17/176002