The crystal structure described by Ho3Gd is alpha La-derived structured and crystallizes in the tetragonal I4/mmm space group. There are two inequivalent Ho sites. In the first Ho site, Ho(1) is bonded to four equivalent Ho(1), four equivalent Ho(2), and four equivalent Gd(1) atoms to form HoGd4Ho8 cuboctahedra that share corners with twelve equivalent Ho(1)Gd4Ho8 cuboctahedra, edges with eight equivalent Ho(1)Gd4Ho8 cuboctahedra, edges with eight equivalent Ho(2)Gd4Ho8 cuboctahedra, edges with eight equivalent Gd(1)Ho12 cuboctahedra, faces with four equivalent Ho(2)Gd4Ho8 cuboctahedra, faces with four equivalent Gd(1)Ho12 cuboctahedra, and faces with ten equivalent Ho(1)Gd4Ho8 cuboctahedra. In the second Ho site, Ho(2) is bonded to eight equivalent Ho(1) and four equivalent Gd(1) atoms to form HoGd4Ho8 cuboctahedra that share corners with four equivalent Ho(2)Gd4Ho8 cuboctahedra, corners with eight equivalent Gd(1)Ho12 cuboctahedra, edges with eight equivalent Ho(2)Gd4Ho8 cuboctahedra, edges with sixteen equivalent Ho(1)Gd4Ho8 cuboctahedra, faces with four equivalent Ho(2)Gd4Ho8 cuboctahedra, faces with six equivalent Gd(1)Ho12 cuboctahedra, and faces with eight equivalent Ho(1)Gd4Ho8 cuboctahedra. Gd(1) is bonded to four equivalent Ho(2) and eight equivalent Ho(1) atoms to form GdHo12 cuboctahedra that share corners with four equivalent Gd(1)Ho12 cuboctahedra, corners with eight equivalent Ho(2)Gd4Ho8 cuboctahedra, edges with eight equivalent Gd(1)Ho12 cuboctahedra, edges with sixteen equivalent Ho(1)Gd4Ho8 cuboctahedra, faces with four equivalent Gd(1)Ho12 cuboctahedra, faces with six equivalent Ho(2)Gd4Ho8 cuboctahedra, and faces with eight equivalent Ho(1)Gd4Ho8 cuboctahedra. is represented by the CIF card [CIF]
data_GdHo3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.164
_cell_length_b   6.164
_cell_length_c   6.164
_cell_angle_alpha   132.039
_cell_angle_beta   132.039
_cell_angle_gamma   70.168
_symmetry_Int_Tables_number   1
_cell_volume   126.605
_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
  Gd  Gd0  1  0.000  0.000  0.000  1.0
  Ho  Ho1  1  0.750  0.250  0.500  1.0
  Ho  Ho2  1  0.250  0.750  0.500  1.0
  Ho  Ho3  1  0.500  0.500  0.000  1.0
[/CIF]
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The crystal structure described by Ho3Gd is alpha La-derived structured and crystallizes in the tetragonal I4/mmm space group. There are two inequivalent Ho sites. In the first Ho site, Ho(1) is bonded to four equivalent Ho(1), four equivalent Ho(2), and four equivalent Gd(1) atoms to form HoGd4Ho8 cuboctahedra that share corners with twelve equivalent Ho(1)Gd4Ho8 cuboctahedra, edges with eight equivalent Ho(1)Gd4Ho8 cuboctahedra, edges with eight equivalent Ho(2)Gd4Ho8 cuboctahedra, edges with eight equivalent Gd(1)Ho12 cuboctahedra, faces with four equivalent Ho(2)Gd4Ho8 cuboctahedra, faces with four equivalent Gd(1)Ho12 cuboctahedra, and faces with ten equivalent Ho(1)Gd4Ho8 cuboctahedra. In the second Ho site, Ho(2) is bonded to eight equivalent Ho(1) and four equivalent Gd(1) atoms to form HoGd4Ho8 cuboctahedra that share corners with four equivalent Ho(2)Gd4Ho8 cuboctahedra, corners with eight equivalent Gd(1)Ho12 cuboctahedra, edges with eight equivalent Ho(2)Gd4Ho8 cuboctahedra, edges with sixteen equivalent Ho(1)Gd4Ho8 cuboctahedra, faces with four equivalent Ho(2)Gd4Ho8 cuboctahedra, faces with six equivalent Gd(1)Ho12 cuboctahedra, and faces with eight equivalent Ho(1)Gd4Ho8 cuboctahedra. Gd(1) is bonded to four equivalent Ho(2) and eight equivalent Ho(1) atoms to form GdHo12 cuboctahedra that share corners with four equivalent Gd(1)Ho12 cuboctahedra, corners with eight equivalent Ho(2)Gd4Ho8 cuboctahedra, edges with eight equivalent Gd(1)Ho12 cuboctahedra, edges with sixteen equivalent Ho(1)Gd4Ho8 cuboctahedra, faces with four equivalent Gd(1)Ho12 cuboctahedra, faces with six equivalent Ho(2)Gd4Ho8 cuboctahedra, and faces with eight equivalent Ho(1)Gd4Ho8 cuboctahedra. is represented by the CIF card [CIF]
data_GdHo3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.164
_cell_length_b   6.164
_cell_length_c   6.164
_cell_angle_alpha   132.039
_cell_angle_beta   132.039
_cell_angle_gamma   70.168
_symmetry_Int_Tables_number   1
_cell_volume   126.605
_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
  Gd  Gd0  1  0.000  0.000  0.000  1.0
  Ho  Ho1  1  0.750  0.250  0.500  1.0
  Ho  Ho2  1  0.250  0.750  0.500  1.0
  Ho  Ho3  1  0.500  0.500  0.000  1.0
[/CIF]
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