Eu₁₀Mn₆Sb₁₃: A New Ternary Rare-Earth Transition-metal Zintl Phase

Author

Aaron Patrick Holm
Seon-Mi Park
Cathie L. Condron
Marilyn M. Olmstead
Hyungrak Kim
Peter Klavins
Fernande Grandjean, Missouri University of Science and TechnologyFollow
Raphäel P. Hermann
Gary J. Long, Missouri University of Science and TechnologyFollow
Mercouri G. Kanatzidis
Susan M. Kauzlarich
Sung Jin Kim

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, ß = 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 (E_a = 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.

Recommended Citation

A. P. Holm and S. Park and C. L. Condron and M. M. Olmstead and H. Kim and P. Klavins and F. Grandjean and R. P. Hermann and G. J. Long and M. G. Kanatzidis and S. M. Kauzlarich and S. J. Kim, "Eu₁₀Mn₆Sb₁₃: A New Ternary Rare-Earth Transition-metal Zintl Phase," Inorganic Chemistry, vol. 42, no. 15, pp. 4660 - 4667, American Chemical Society (ACS), Jul 2003.

The definitive version is available at https://doi.org/10.1021/ic034054w

Department(s)

Chemistry

Keywords and Phrases

Antimony; Europium; Ferromagnetic Material; Lanthanide; Manganese; Transition Element; Crystal Structure; Electric Conductivity; Electric Resistance; High Temperature; Isomer; Magnetism; Synthesis; Temperature Dependence

International Standard Serial Number (ISSN)

0020-1669

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2003 American Chemical Society (ACS), All rights reserved.

Publication Date

01 Jul 2003