data_global
_amcsd_formula_title 'Ba2 Cu4 O8.06 Y'
loop_
_publ_author_name
'Karpinski J'
'Kaldis E'
'Rusiecki S'
'Jilek E'
'Fischer P'
'Bordet P'
'Chaillout C'
'Chenavas J'
'Hodeau J'
'Marezio M'
_journal_name_full 'Journal of the Less-Common Metals'
_journal_volume 150 
_journal_year 1989
_journal_page_first 129
_journal_page_last 137
_publ_section_title
;
 Two New Bulk Superconducting Phases in the Y-Ba-Cu-O System: Y Ba2
 Cu3.5 O7+x (Tc 40K) and Y Ba2 Cu4 O8+x (Tc 80K)
 _cod_database_code 1008448
;
_database_code_amcsd 0016353
_chemical_formula_sum 'Y Ba2 Cu4 O8.056'
_cell_length_a 3.8415
_cell_length_b 3.8707
_cell_length_c 27.240
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 405.040
_exptl_crystal_density_diffrn      6.122
_symmetry_space_group_name_H-M 'A m m m'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,1/2+y,1/2+z'
  'x,y,-z'
  'x,1/2+y,1/2-z'
  '-x,-y,z'
  '-x,1/2-y,1/2+z'
  'x,-y,z'
  'x,1/2-y,1/2+z'
  '-x,y,-z'
  '-x,1/2+y,1/2-z'
  '-x,y,z'
  '-x,1/2+y,1/2+z'
  'x,-y,-z'
  'x,1/2-y,1/2-z'
  '-x,-y,-z'
  '-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
Y1   0.50000   0.50000   0.00000   1.00000
Ba1   0.50000   0.50000   0.13560   1.00000
Cu1   0.00000   0.00000   0.21270   1.00000
Cu2   0.00000   0.00000   0.06140   1.00000
O1   0.00000   0.00000   0.14540   1.00000
O2   0.50000   0.00000   0.05240   1.00000
O3   0.00000   0.50000   0.05280   1.00000
O4   0.00000   0.50000   0.21870   0.99600
O5   0.50000   0.00000   0.25400   0.03200