Eu10Mn6Sb13: A new ternary rare-earth transition-metal Zintl phase

Aaron P. Holm, Seon Mi Park, Cathie L. Condron, Marilyn M. Olmstead, Hyungrak Kim, Peter Klavins, Fernande Grandjean*, Raphaěl P. Hermann, Gary J. Long, Mercouri G. Kanatzidis, Susan M. Kauzlarich, Sung Jin Kim

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

40 Scopus citations

Abstract

A new transition-metal-containing Zintl compound, Eu10Mn6Sb13, was prepared by a high-temperature Sn-flux synthesis. The structure was determined by single-crystal X-ray diffraction. Eu10Mn6Sb13 crystallizes in the monoclinic space group C2/m with a = 15.1791(6) Å, b = 19.1919(7) Å, c = 12.2679(4) Å, β = 108.078(1)°, Z = 4 (R1 = 0.0410, wR2 = 0.0920), and T = 90(2) K. The structure of Eu10Mn16Sb13 is composed of double layers of Mn-centered tetrahedra separated by Eu2+ cations. The double layers are composed of edge- and corner-sharing Mn-centered tetrahedra which form cavities occupied by Eu2+ cations and [Sb2]4- dumbbells. Linear [Sb3]5- trimers bridging two tetrahedra across the cavity are also present. Bulk susceptibility data indicate paramagnetic behavior with a ferromagnetic component present below 60 K. Temperature-dependent electrical resistivity measurements show semiconducting behavior above 60 K (Ea = 0.115(2) eV), a large and unusually sharp maximum in the resistivity at ∼40 K, and metallic behavior below 40 K. 151Eu Mössbauer spectra confirm that the europium is divalent with an average isomer shift of -11.2(1) mm/s at 100 K; the spectra obtained below 40 K reveal magnetic ordering of six of the seven europium sublattices and, at 4.2 K, complete ordering of the seven europium sublattices.

Original languageEnglish (US)
Pages (from-to)4660-4667
Number of pages8
JournalInorganic Chemistry
Volume42
Issue number15
StatePublished - Jul 28 2003

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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