data_[Sm1Er7Tm3]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sm  1.1700  1.8500  1.2290
  Er  1.2400  1.7500  1.0300
  Tm  1.2500  1.7500  1.0950
]
_symmetry_space_group_name_H-M [P2/m]
_cell_length_a [6.8642]
_cell_length_b [5.4688]
_cell_length_c [9.7865]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.2958]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [10]
_chemical_formula_structural [SmEr7Tm3]
_chemical_formula_sum '[Sm1 Er7 Tm3]'
_cell_volume [346.7327]
_cell_formula_units_Z [1]
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
[
  Sm  Sm0  1  0.5000  0.0000  0.5000  1
  Er  Er1  2  0.0720  0.0000  0.1678  1
  Er  Er2  2  0.1765  0.5000  0.3577  1
  Er  Er3  2  0.3499  0.5000  0.7098  1
  Er  Er4  1  0.5000  0.0000  0.0000  1
  Tm  Tm5  2  0.2245  0.5000  0.0053  1
  Tm  Tm6  1  0.0000  0.0000  0.5000  1
]