EL HALLAK, F.; ROSA, Patrick; VIDAL, P.; SHEIKIN, I.; DRESSEL, M.; VAN SLAGEREN, Joris

doi:10.1209/0295-5075/95/57002

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EL HALLAK, F.
Physikalisches Institut [Stuttgart] [Pfaffenwaldring 57, D–70550 Stuttgart, Germany]
London Centre for Nanotechnology

ROSA, Patrick
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

VIDAL, P.
Institut für Theoretische Physik

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EPL - Europhysics Letters. 2011, vol. 95, n° 5, p. 57002 (5 p.)

European Physical Society/EDP Sciences/Società Italiana di Fisica/IOP Publishing

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We investigate a Fe<sub>2</sub> molecular nanomagnet that displays a giant, field-induced step in its magnetisation curve. Detailed magnetisation and magnetic torque investigations demonstrate that in this Fe<sub>2</sub> system the single-ion anisotropy is dominant over the isotropic exchange coupling. Accurate spin Hamiltonian parameter values and tensor orientations are obtained. The theoretical analysis reveals that this system is a very promising candidate for the direct observation of the Néel vector tunnel splitting in weakly coupled molecular nanomagnets.< Leer menos

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Molecular magnets

Magnetic anisotropy

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Giant magnetisation step in Fe<sub>2</sub>: Molecular nanomagnets in the weak exchange limit

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