Level crossing in a molecular Cr8 ring

Affronte, M.; Guidi, T.; Caciuffo, R.; Carretta, S.; Amoretti, G.; Hinderer, J.; Sheikin, I.; Smith, A. A.; Winpenny, R. E. P.; van Slageren, J.; Gatteschi, D.

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Level crossing in a molecular Cr₈ ring

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Hinderer, J.
High Magnetic Field Laboratory, Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;

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Sheikin, I.
High Magnetic Field Laboratory, Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Affronte, M., Guidi, T., Caciuffo, R., Carretta, S., Amoretti, G., Hinderer, J., et al. (2004). Level crossing in a molecular Cr₈ ring. Journal of Magnetism and Magnetic Materials, 272-276, 1050-1051.

Cite as: https://hdl.handle.net/21.11116/0000-000E-FB2F-4

Abstract

The heat capacity of a molecular Cr-8 ring was measured as a function
of temperature and magnetic field in order to follow the evolution of
the Schottky anomaly through the first (S = 0 to \1, - I >) level
crossing occurring at B-c1 = 6.9 T. The results are interpreted within
the framework of a spin Hamiltonian approach and they nicely fit the
pattern of the energy levels derived by inelastic neutron spectroscopy.
At B-c1, the Schottky anomaly almost vanishes suggesting that a true
crossing occurs in Cr-8 in contrast to what was observed for ferric
wheels. (C) 2004 Elsevier B.V. All rights reserved.