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@ARTICLE{Ahrens:167493,
      author       = {Ahrens, E. and Nitsche, F. and Doert, Th. and Ruck, M.},
      title        = {{S}ingle-crystal {X}-ray diffraction investigation of the
                      reversible order-disorder phase transition in iron-deficient
                      {T}l{F}e2-x{S}e2},
      journal      = {Crystal research and technology},
      volume       = {49},
      number       = {1},
      issn         = {0232-1300},
      address      = {Weinheim},
      publisher    = {Wiley-VCH},
      reportid     = {DESY-2014-01835},
      pages        = {32 - 37},
      year         = {2014},
      abstract     = {A reversible phase transition was found for iron-deficient
                      TlFe2–xSe2 (x ≈ 0.4) and investigated on single crystals
                      using high temperature synchrotron radiation X-ray
                      diffraction. Full data sets have been collected at room
                      temperature and at 200°C to evaluate the structures. The
                      high-temperature form (space group I4/mmm, lattice
                      parameters a = 3.8919(3) Å, c = 14.027(3) Å) shows
                      complete statistical disorder of iron positions and
                      vacancies in a ThCr2Si2 type structure. The low-temperature
                      form corresponds to a √5×√5 superstructure of the
                      ThCr2Si2 type (I4/m, a = 8.6966(2) Å, c = 14.009(9) Å) and
                      shows partial ordering of iron positions and vacancies. A
                      group-subgroup relation can be compiled between both
                      structures.},
      cin          = {DOOR},
      ddc          = {540},
      cid          = {I:(DE-H253)HAS-User-20120731},
      pnm          = {DORIS Beamline D3 (POF2-54G13) / FS-Proposal: I-20110003
                      (I-20110003)},
      pid          = {G:(DE-H253)POF2-D3-20130405 / G:(DE-H253)I-20110003},
      experiment   = {EXP:(DE-H253)D-D3-20150101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000337297500006},
      doi          = {10.1002/crat.201300223},
      url          = {https://bib-pubdb1.desy.de/record/167493},
}