data_[Tb18Ho18Er6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Ho  1.2300  1.7500  1.0410
  Er  1.2400  1.7500  1.0300
]
_symmetry_space_group_name_H-M [R-3]
_cell_length_a [6.1340]
_cell_length_b [6.1340]
_cell_length_c [42.2330]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [148]
_chemical_formula_structural [Tb3Ho3Er]
_chemical_formula_sum '[Tb18 Ho18 Er6]'
_cell_volume [1376.1707]
_cell_formula_units_Z [6]
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
[
  Tb  Tb0  18  0.0001  0.3312  0.1324  1
  Ho  Ho1  18  0.0001  0.3339  0.9342  1
  Er  Er2  6  0.0000  0.0000  0.3333  1
]