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Clusters and ions in {TR6}X12R (T=Fe, Co, Ru, Os, Ir, R=Dy, Ho, Er, X=Br, I)-A magnetic study

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Valldor,  M.
Martin Valldor, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Valldor, M., Meyer, E., Rustige, C., & Meyer, G. (2013). Clusters and ions in {TR6}X12R (T=Fe, Co, Ru, Os, Ir, R=Dy, Ho, Er, X=Br, I)-A magnetic study. Journal of Magnetism and Magnetic Materials, 347, 4-9. doi:10.1016/j.jmmm.2013.07.039.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0015-1E16-E
Abstract
Eight cluster complex compounds with the composition {TR6}X12R (T=Fe, Co, Ru, Os, Ir, R=Dy, Ho, Er, X=Br, I) exhibiting the same crystal structure, {BSc6}Cl12Sc type, were investigated by magnetometry. A diversity of magnetic properties was recorded depending on chemical compositions. Long range spin order is suggested for {CoHo6}I12Ho, {FeHo6}I12Ho and {OsDy6}I12Dy below 40, 20 and 17 K, respectively. The occurrence of 1-10% magnetic energy losses at lower temperatures with strong frequency dependence makes several of the compounds comparable with molecular magnets. Both the {TR6} cluster and the single R3+ ion contribute to out-of-phase susceptibility; these effects appear separately and can be investigated individually by employing an AC-magnetic field. (c) 2013 Elsevier B.V. All rights reserved.