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@ARTICLE{Singh:173006,
      author       = {Singh, D. and Yun, Y. and Wan, W. and Grushko, Benjamin and
                      Zou, X. D. and Hovmöller, S.},
      title        = {{A} complex pseudo-decagonal quasicrystal approximant
                      {A}l$_{37}$({C}o,{N}i)$_{15.5}$ solved by the rotation
                      electron diffraction ({RED}) method},
      journal      = {Journal of applied crystallography},
      volume       = {47},
      issn         = {0021-8898},
      address      = {Copenhagen},
      publisher    = {Munksgaard},
      reportid     = {FZJ-2014-06420},
      pages        = {215 - 221},
      year         = {2014},
      abstract     = {Electron diffraction is a complementary technique to
                      single-crystal X-ray diffraction and powder X-ray
                      diffraction for structure solution of unknown crystals.
                      Crystals too small to be studied by single-crystal X-ray
                      diffraction or too complex to be solved by powder X-ray
                      diffraction can be studied by electron diffraction. The main
                      drawbacks of electron diffraction have been the difficulties
                      in collecting complete three-dimensional electron
                      diffraction data by conventional electron diffraction
                      methods and the very time-consuming data collection. In
                      addition, the intensities of electron diffraction suffer
                      from dynamical scattering. Recently, a new electron
                      diffraction method, rotation electron diffraction (RED), was
                      developed, which can overcome the drawbacks and reduce
                      dynamical effects. A complete three-dimensional electron
                      diffraction data set can be collected from a
                      sub-micrometre-sized single crystal in less than 2 h. Here
                      the RED method is applied for ab initio structure
                      determination of an unknown complex intermetallic phase, the
                      pseudo-decagonal (PD) quasicrystal approximant
                      Al37.0(Co,Ni)15.5, denoted as PD2. RED shows that the
                      crystal is F-centered, with a = 46.4, b = 64.6, c = 8.2 Å.
                      However, as with other approximants in the PD series, the
                      reflections with odd l indices are much weaker than those
                      with l even, so it was decided to first solve the PD2
                      structure in the smaller, primitive unit cell. The basic
                      structure of PD2 with unit-cell parameters a = 23.2, b =
                      32.3, c = 4.1 Å and space group Pnmm has been solved in the
                      present study. The structure with c = 8.2 Å will be taken
                      up in the near future. The basic structure contains 55
                      unique atoms (17 Co/Ni and 38 Al) and is one of the most
                      complex structures solved by electron diffraction. PD2 is
                      built of characteristic 2 nm wheel clusters with fivefold
                      rotational symmetry, which agrees with results from
                      high-resolution electron microscopy images. Simulated
                      electron diffraction patterns for the structure model are in
                      good agreement with the experimental electron diffraction
                      patterns obtained by RED.},
      cin          = {PGI-5},
      ddc          = {540},
      cid          = {I:(DE-Juel1)PGI-5-20110106},
      pnm          = {424 - Exploratory materials and phenomena (POF2-424)},
      pid          = {G:(DE-HGF)POF2-424},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000330485100029},
      doi          = {10.1107/S1600576713029294},
      url          = {https://juser.fz-juelich.de/record/173006},
}