data_global
_amcsd_formula_title 'Al11 Gd0.46 La0.43 Mg0.635 O18.46'
loop_
_publ_author_name
'Salem Y'
'Linares C'
'Jacquier B'
'Saine M'
'Gasperin M'
'Lejus A'
'Vivien D'
_journal_name_full 'Journal of Chemical Physics'
_journal_volume 93 
_journal_year 1990
_journal_page_first 7076
_journal_page_last 7084
_publ_section_title
;
 The sites of Gd^3+^ in the luminescent matrix La1-xGdxMgAl11O19:
 single crystal structure determination and site-selective excitation of Gd^3+^
 _cod_database_code 1001462
;
_database_code_amcsd 0013019
_chemical_formula_sum 'La.43 Gd.462 Al11.003 Mg.635 O18.46'
_cell_length_a 5.565
_cell_length_b 5.565
_cell_length_c 21.89
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 120
_cell_volume 587.093
_exptl_crystal_density_diffrn      4.186
_symmetry_space_group_name_H-M 'P 63/m m c'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '-x,-x+y,1/2+z'
  'x,x-y,1/2-z'
  '-x+y,-x,1/2-z'
  'x-y,x,1/2+z'
  '-y,-x,z'
  'y,x,-z'
  'y,-x+y,-z'
  '-y,x-y,z'
  'x-y,-y,1/2+z'
  '-x+y,y,1/2-z'
  'x,y,1/2-z'
  '-x,-y,1/2+z'
  'x,x-y,z'
  '-x,-x+y,-z'
  'x-y,x,-z'
  '-x+y,-x,z'
  'y,x,1/2+z'
  '-y,-x,1/2-z'
  '-y,x-y,1/2-z'
  'y,-x+y,1/2+z'
  '-x+y,y,z'
  'x-y,-y,-z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
La1   0.66667   0.33333   0.25000   0.43000
Gd1   0.67270   0.37550   0.25000   0.07700
Al1   0.00000   0.00000   0.00000   0.91700
Mg1   0.00000   0.00000   0.00000   0.05300
Al2   0.33333   0.66667   0.02730   0.91700
Mg2   0.33333   0.66667   0.02730   0.05300
Al3   0.33333   0.66667   0.19010   0.91700
Mg3   0.33333   0.66667   0.19010   0.05300
Al4   0.83220   0.66440   0.10850   0.91700
Mg4   0.83220   0.66440   0.10850   0.05300
Al5   0.00000   0.00000   0.24190   0.45800
Mg5   0.00000   0.00000   0.24190   0.02600
O1   0.19940   0.36320   0.25000   0.47000
O2   0.15320   0.30640   0.05330   1.00000
O3   0.50530   0.01060   0.15150   0.94000
O4   0.00000   0.00000   0.15110   1.00000
O5   0.66667   0.33333   0.05780   1.00000