data_[Sr2Tb2Al2O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Tb  1.1000  1.7500  0.9815
  Al  1.6100  1.2500  0.6750
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [I4mm]
_cell_length_a [3.7305]
_cell_length_b [3.7305]
_cell_length_c [12.2501]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [107]
_chemical_formula_structural [SrTbAlO4]
_chemical_formula_sum '[Sr2 Tb2 Al2 O8]'
_cell_volume [170.4809]
_cell_formula_units_Z [2]
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
[
  Sr  Sr0  2  0.0000  0.0000  0.6453  1.0
  Tb  Tb1  2  0.0000  0.0000  0.3608  1.0
  Al  Al2  2  0.0000  0.0000  0.0006  1.0
  O  O3  4  0.0000  0.5000  0.4915  1.0
  O  O4  2  0.0000  0.0000  0.1713  1.0
  O  O5  2  0.0000  0.0000  0.8391  1.0
]