Studies of critical phenomena in molecular magnets by [mu]SR spectroscopy

The rapidly developing field of molecular magnetism supplies a multitude of novel compounds of unprecedented properties and structure. Molecular magnets predominantly belong to the class of compounds involving well localized magnetic moments. This feature together with the fact that the nature and s...

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Bibliographic Details
Published in:Journal of physics. Conference series 2011-01, Vol.303 (1), p.1-8
Main Authors: Wasiutynski, T, Balanda, M, Czapla, M, Pelka, R, Zielinski, P M, Pratt, F L, Korzeniak, T, Podgajny, R, Pinkowicz, D, Sieklucka, B
Format: Article
Language:English
Subjects:
Fluctuation
Grounds
Heat capacity
Magnetic permeability
Magnetism
Magnets
Spectroscopy
Spin dynamics
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Summary:The rapidly developing field of molecular magnetism supplies a multitude of novel compounds of unprecedented properties and structure. Molecular magnets predominantly belong to the class of compounds involving well localized magnetic moments. This feature together with the fact that the nature and symmetry of magnetic interactions is encrypted in the critical behaviour makes them a perfect testing ground of the existing theoretical spin models. It is demonstrated that the experimental technique of the [mu]SR spectroscopy is perfectly suited to study magnetic fluctuations and spin dynamics in the neighbourhood of a phase transition. This unique method can even dispense with the complementary measurements of the AC susceptibility or heat capacity to supply a complete set of the static and dynamic critical exponents. It can thus be used to pinpoint the universality class of the material of interest.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/303/1/012034