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Y. Matsumoto, S. Nakatsuji, K. Kuga, Y. Karaki, N. Horie, Y. Shimura, T. Sakakibara, A. H. Nevidomskyy and P. Coleman, “Quantum Criticality without Tuning in the Mixed Valence Compound Β-YbAlB4,” Science, Vol. 331, No. 6015, 2011, pp. 316-319. doi:10.1126/science.1197531

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• TITLE: Single Crystal X-Ray Diffraction Studies on Magnetic Yb5Co4Ge10

  AUTHORS: Udumula Subbarao, Sebastian C. Peter

  KEYWORDS: X-Ray Diffraction; Single Crystal; Intermetallics; Ytterbium

  JOURNAL NAME: Advances in Materials Physics and Chemistry, Vol.3 No.1A, April 26, 2013

  ABSTRACT: The high quality single crystals of Yb5Co4Ge10 have been grown by the indium metal flux method and characterized by means of single crystal X-ray diffraction data. Yb5Co4Ge10 crystallizes in the Sc5Co4Si10 structure type, tetragonal space group P4/mbm and lattice constants are a = b = 12.6369(18) ? and c = 4.1378(8) ?. Crystal structure of Yb5Co4Ge10 composed of three-dimensional [Co4Ge12] network having five, six and eight membered rings. The three non-equivalent Yb atoms are sandwiched in three different channels created by the [Co4Ge12] network. Based on the bond length analysis from the crystallographic information, we confirmed that Yb1 and Yb2 atoms are in the trivalent magnetic state and Yb3 is in the divalent non-magnetic state.