Reference : Eu10Mn6Sb13: A new ternary rare-earth transition-metal
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Chemistry
http://hdl.handle.net/2268/100380
Eu10Mn6Sb13: A new ternary rare-earth transition-metal
English
Holm, A. P. [> > > >]
Park, S. M. [> > > >]
Condron, C. L. [> > > >]
Olmstead, M. M. [> > > >]
Kim, H. [> > > >]
Klavins, P. [> > > >]
Grandjean, Fernande mailto [Université de Liège - ULg > Département de physique > Département de physique >]
Hermann, Raphaël mailto [Université de Liège - ULg > Département de physique > Département de physique >]
Long, G. J. [> > > >]
Kanatzidis, M. G. [> > > >]
Kauzlarich, S. M. [> > > >]
Kim, S. J. [> > > >]
2003
Inorganic Chemistry
American Chemical Society
42
15
4660-4667
Yes (verified by ORBi)
0020-1669
1520-510X
Washington
DC
[en] 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) Angstrom, b = 19.1919(7) Angstrom, c = 12.2679(4) Angstrom, beta = 108.078(1)degrees, Z = 4 (R1 = 0.0410, wR2 = 0.0920), and T = 90(2) K. The structure of Eu10Mn6Sb13 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 [Sb-2](4-) dumbbells. Linear [Sb-3](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 similar to40 K, and metallic behavior below 40 K. Eu-151 Mossbauer 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.
http://hdl.handle.net/2268/100380
10.1021/ic034054w

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