data_global
_amcsd_formula_title 'Ba Fe2 La2 O7'
loop_
_publ_author_name
'Samaras D'
'Collomb A'
'Joubert J'
_journal_name_full 'Journal of Solid State Chemistry'
_journal_volume 7 
_journal_year 1973
_journal_page_first 337
_journal_page_last 348
_publ_section_title
;
 Determination des structures de deux ferrite mixtes nouveaux de formule
 Ba La2 Fe2 O7 et Sr Tb2 Fe2 O7
 _cod_database_code 1008088
;
_database_code_amcsd 0016030
_chemical_formula_sum '(Ba.999 La2.001) Fe2 O7'
_cell_length_a 3.9335
_cell_length_b 3.9335
_cell_length_c 20.853
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 322.646
_exptl_crystal_density_diffrn      6.576
_symmetry_space_group_name_H-M 'I 4/m m m'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2+x,1/2+y,1/2+z'
  '-y,-x,z'
  '1/2-y,1/2-x,1/2+z'
  'y,x,-z'
  '1/2+y,1/2+x,1/2-z'
  'y,-x,-z'
  '1/2+y,1/2-x,1/2-z'
  '-y,x,z'
  '1/2-y,1/2+x,1/2+z'
  'x,-y,z'
  '1/2+x,1/2-y,1/2+z'
  '-x,y,-z'
  '1/2-x,1/2+y,1/2-z'
  'x,y,-z'
  '1/2+x,1/2+y,1/2-z'
  '-x,-y,z'
  '1/2-x,1/2-y,1/2+z'
  'y,x,z'
  '1/2+y,1/2+x,1/2+z'
  '-y,-x,-z'
  '1/2-y,1/2-x,1/2-z'
  '-y,x,-z'
  '1/2-y,1/2+x,1/2-z'
  'y,-x,z'
  '1/2+y,1/2-x,1/2+z'
  '-x,y,z'
  '1/2-x,1/2+y,1/2+z'
  'x,-y,-z'
  '1/2+x,1/2-y,1/2-z'
  '-x,-y,-z'
  '1/2-x,1/2-y,1/2-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
Ba1   0.00000   0.00000   0.50000   0.33300
Ba2   0.00000   0.00000   0.31810   0.33300
La1   0.00000   0.00000   0.50000   0.66700
La2   0.00000   0.00000   0.31810   0.66700
Fe1   0.00000   0.00000   0.09670   1.00000
O1   0.00000   0.00000   0.00000   1.00000
O2   0.00000   0.50000   0.10700   1.00000
O3   0.00000   0.00000   0.20400   1.00000