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@ARTICLE{Li:57555,
      author       = {Li, M. R. and Deng, D. W. and Kuo, K. H.},
      title        = {{C}rystal structure of the hexagonal ({Z}n, {M}g)4{H}o and
                      ({Z}n, {M}g)4{E}r},
      journal      = {Journal of alloys and compounds},
      volume       = {414},
      issn         = {0925-8388},
      address      = {Lausanne},
      publisher    = {Elsevier},
      reportid     = {PreJuSER-57555},
      year         = {2006},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {The crystal structure of the hexagonal (Zn, Mg)(4)Ho/Er was
                      determined by single crystal X-ray diffraction analysis. For
                      the Zn68.4Mg12.7Ho18.9, the structural model, refined to a
                      final R-value of 0.0672, has the composition of
                      Zn69.34Mg12.01Ho18.65, a = 14.259 angstrom and c = 14.007
                      angstrom, and the space group P6(3)/mmc (No. 194). Among the
                      10 Zn, 2 Mg, and 4 Ho independent sites, 3 Zn sites are
                      icosahedral coordinated whereas I Mg is located at the
                      center of a CN15 Kasper deltahedron enclosed by 26 triangles
                      and 15 vertices. In the (100) directions, there are four
                      interpenetrated icosahedra, I4(P), within an a period,
                      constituting an icosahedral (001) layer block in half of the
                      unit-cell. In the [001] direction, in addition to the two
                      face-sharing icosahedra, I2(F), there is still a CN15 Kasper
                      deltahedron. For the Zn70.8Mg10.6Er18.6, the final
                      refinement led to a R-value of 0.0708. The atom coordinates
                      are very close to those of above (Zn, Mg)(4)Ho, the largest
                      difference between two corresponding coordinates being only
                      0.00086. Thus (Zn, Mg)(4)Er is iso-structural with (Zn,
                      Mg)(4)Ho. This hexagonal (Zn, Mg)(4)RE phase has also been
                      found in RE = Y, Sm, Gd, Dy, and Yb cases and they are
                      probably also iso-structural with (Zn, Mg)(4)Ho/Er. This
                      structure is icosahedrally closely related to the other two
                      known, hexagonal, Zn-rich (Zn, Mg)(n)RE structures, namely,
                      the Zn6Mg3Y/Sm/Gd [H. Takakura, A. Sato, A. Yamamoto, A.P.
                      Tsai, Phil. Mag. Lett. 78 (1998) 263; K. Sugiyarna, K.
                      Yasuda, T. Ohsuna, K. Hiraga, Z. Kristallogn 213 (1998) 537]
                      and the Zn3MgY [D.W. Deng, K.H. Kuo, Z.P. Luo, D.J. Miller,
                      M.J. Kramer, D.W. Dennis, J. Alloys Compd. 373 (2004) 156].
                      All these three hexagonal phases coexist with the
                      icosahedral quasicrystal in the Zn-Mg-RE alloys. (c) 2005
                      Elsevier B.V. All rights reserved.},
      keywords     = {J (WoSType)},
      cin          = {IFF-IMF},
      ddc          = {670},
      cid          = {I:(DE-Juel1)VDB37},
      pnm          = {Kondensierte Materie},
      pid          = {G:(DE-Juel1)FUEK414},
      shelfmark    = {Chemistry, Physical / Materials Science, Multidisciplinary
                      / Metallurgy $\&$ Metallurgical Engineering},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000236955900012},
      doi          = {10.1016/j.jallcom.2005.07.008},
      url          = {https://juser.fz-juelich.de/record/57555},
}