Intermediate valence behavior in the novel cage compound CeIr 2Zn20

P. Swatek, D. Kaczorowski

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18 Scopus citations


Single crystals of the cerium intermetallic compound CeIr 2Zn20 were grown by the flux method, and studied by means of x-ray diffraction, magnetic, electrical transport, and thermodynamic measurements. The compound crystallizes with the cubic CeCr2Al 20-type crystal structure, in which the Ce and transition metal atoms are located inside cages formed by the Al/Zn atoms. CeIr2Zn 20 shows paramagnetic behavior and metallic-like electrical conductivity. The bulk physical data conjointly indicate its intermediate valence character due to an unstable 4f shell. Accordingly, the charge carriers in this material exhibit moderate mass enhancement. The observed physical behavior in CeIr2Zn20 is in concert with the electronic structure of the compound, calculated within the local spin density approximation.

Original languageEnglish (US)
Article number055602
JournalJournal of Physics Condensed Matter
Issue number5
StatePublished - Feb 6 2013
Externally publishedYes


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