Itinerant iron magnetism in filled skutterudites CaFe4Sb12 and YbFe4Sb12: 
Stable divalent state of ytterbium

Schnelle, W.; Leithe-Jasper, A.; Schmidt, M.; Rosner, H.; Borrmann, H.; Burkhardt, U.; Mydosh, J. A.; Grin, Y.

doi:10.1103/PhysRevB.72.020402

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Itinerant iron magnetism in filled skutterudites CaFe₄Sb₁₂ and YbFe₄Sb₁₂: Stable divalent state of ytterbium

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Schnelle, W.
Walter Schnelle, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Leithe-Jasper, A.
Andreas Leithe-Jasper, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Schmidt, M.
Marcus Schmidt, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Rosner, H.
Helge Rosner, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Borrmann, H.
Horst Borrmann, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Burkhardt, U.
Ulrich Burkhardt, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Mydosh, J. A.
Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126626

Grin, Y.
Juri Grin, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Citation

Schnelle, W., Leithe-Jasper, A., Schmidt, M., Rosner, H., Borrmann, H., Burkhardt, U., et al. (2005). Itinerant iron magnetism in filled skutterudites CaFe₄Sb₁₂ and YbFe₄Sb₁₂: Stable divalent state of ytterbium. Physical Review B, 72: 020402, pp. 020402-1-020402-4. doi:10.1103/PhysRevB.72.020402.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0015-2C91-9

Abstract

A comparative study of the filled skutterudite compounds YbFe4Sb12 and CaFe4Sb12 is presented. Crystal structure investigations and measurements of magnetic susceptibility, specific heat and electrical resistivity in magnetic field, and x-ray absorption spectroscopy have been performed. Almost identical structural, magnetic, and electronic properties of both compounds are observed. Electronic structure calculations support this similarity. It is concluded that ytterbium in Yb1−xFe4Sb12 is stable divalent and the magnetic moments in both materials are solely due to itinerant-electron paramagnetism of the Fe−Sb polyanion. The calcium and ytterbium iron-antimony skutterudites are nearly ferromagnetic metals and their properties are mainly governed by spin fluctuations.