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  Change of magnetic and electronic features through subtle substitution in cubic, non-centrosymmetric extended rare-earth metal cluster complexes {TR3}X3

Steinberg, S., Valldor, M., & Meyer, G. (2013). Change of magnetic and electronic features through subtle substitution in cubic, non-centrosymmetric extended rare-earth metal cluster complexes {TR3}X3. Journal of Solid State Chemistry, 206, 176-181. doi:10.1016/j.jssc.2013.08.012.

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Steinberg, S., Author
Valldor, M.1, Author              
Meyer, G., Author
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1Martin Valldor, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863454              

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 Abstract: The new compound {IrCe3}I-3 was synthesized by comproportionation reactions of stoichiometric ratios of CeI3, Ce and Ir. Single crystal X-ray diffraction structure determination shows that {IrCe3}I-3 crystallizes with the cubic variant of the {TR3}X-3 family (I4(1)32, Z=8, a=12.450(1) angstrom, V=1930.0(3) angstrom(3)) and is isostructural with the recently reported {RuLa3}Br-3. Octahedral {IrCe6} clusters share three common edges forming interpenetrating chains that run along the 4(1) screw axes. Magnetic measurements on pure powder samples of {IrCe3}I-3 show paramagnetic behavior and, at temperatures below 2 K, a mictomagnetic state. The isostructural {RuLa3}Br-3 is a Pauli paramagnet suggesting metallic conductivity which is consistent with band structure calculations where the Fermi level is placed below a pseudogap. For {IrCe3}I-3, on the contrary, the Fermi level falls in a narrow gap rather than a pseudogap suggesting activated conductivity. (C) 2013 Elsevier Inc. All rights reserved.

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Language(s): eng - English
 Dates: 2013-10-08
 Publication Status: Published in print
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 Rev. Type: -
 Identifiers: eDoc: 671355
ISI: 000326007800028
DOI: 10.1016/j.jssc.2013.08.012
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Title: Journal of Solid State Chemistry
Source Genre: Journal
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Pages: - Volume / Issue: 206 Sequence Number: - Start / End Page: 176 - 181 Identifier: ISSN: 0022-4596