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#$Date: 2008-01-26 15:05:32 +0200 (Sat, 26 Jan 2008) $
#$Revision: 19 $
#$URL: file:///home/coder/svn-repositories/cod/cif/2/2300101.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/
#
# All data on this site have been placed in the public domain by the
# contributors.
#
data_2300101
_journal_name_full  'Journal of Applied Crystallography'
_journal_year  2004
_journal_volume  37
_journal_page_first  698
_journal_page_last  702
_publ_section_title
;
Observation of Orientational Disorder in Hexagonal Stuffed Tridymite
Sr~0.864~Eu~0.136~Al~2~O~4~ by Maximum Entropy Method
;
loop_
_publ_author_name
  'Chao-Nan, Xu'
  'Wen-Sheng Shi'
_chemical_name_common  'strontium europium aluminate'
_chemical_formula_moiety  'Al2 Eu0.136 O4 Sr0.864'
_chemical_formula_sum  'Al2 Eu0.136 O4 Sr0.864'
_chemical_formula_structural  '(Sr0.864 Eu0.136 O) (Al2O3)'
_chemical_formula_analytical  'Sr0.864(3) Eu0.136 Al2 O4'
_chemical_formula_weight  214.3309
_symmetry_cell_setting  hexagonal
_symmetry_space_group_name_H-M  'P 63 2 2'
_symmetry_space_group_name_Hall  'P6c 2c'
loop_
_symmetry_equiv_pos_site_id
_symmetry_equiv_pos_as_xyz
  1 x,y,z
  2 -y,x-y,z
  3 -x+y,-x,z
  4 -x,-y,z+1/2
  5 y,-x+y,z+1/2
  6 x-y,x,z+1/2
  7 y,x,-z
  8 x-y,-y,-z
  9 -x,-x+y,-z
  10 -y,-x,-z+1/2
  11 -x+y,y,-z+1/2
  12 x,x-y,-z+1/2
_cell_length_a  5.11635(10)
_cell_length_b  5.11635(10)
_cell_length_c  8.3673(2)
_cell_angle_alpha  90.0
_cell_angle_beta  90.0
_cell_angle_gamma  120.0
_cell_volume  189.689(6)
_cell_formula_units_Z  2
_cell_measurement_temperature  297
_exptl_crystal_density_diffrn  3.73
_diffrn_ambient_temperature  297
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_thermal_displace_type
_atom_site_occupancy
_atom_site_type_symbol
  Sr 0 0 0.25 Biso 0.864(3) Sr
  Eu 0 0 0.25 Biso 0.136 Eu
  Al 0.33333 0.66667 0.94731 Biso 1.0 Al
  O1 0.4074(6) 0.81477 0.75 Biso 0.333 O
  O2 0.36026(6) 0.0012(9) 0.0435(4) Biso 0.500 O