The material described by Ho3Sm 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 Sm(1) atoms to form HoSm4Ho8 cuboctahedra that share corners with twelve equivalent Ho(1)Sm4Ho8 cuboctahedra, edges with eight equivalent Ho(1)Sm4Ho8 cuboctahedra, edges with eight equivalent Ho(2)Sm4Ho8 cuboctahedra, edges with eight equivalent Sm(1)Ho12 cuboctahedra, faces with four equivalent Ho(2)Sm4Ho8 cuboctahedra, faces with four equivalent Sm(1)Ho12 cuboctahedra, and faces with ten equivalent Ho(1)Sm4Ho8 cuboctahedra. In the second Ho site, Ho(2) is bonded to eight equivalent Ho(1) and four equivalent Sm(1) atoms to form HoSm4Ho8 cuboctahedra that share corners with four equivalent Ho(2)Sm4Ho8 cuboctahedra, corners with eight equivalent Sm(1)Ho12 cuboctahedra, edges with eight equivalent Ho(2)Sm4Ho8 cuboctahedra, edges with sixteen equivalent Ho(1)Sm4Ho8 cuboctahedra, faces with four equivalent Ho(2)Sm4Ho8 cuboctahedra, faces with six equivalent Sm(1)Ho12 cuboctahedra, and faces with eight equivalent Ho(1)Sm4Ho8 cuboctahedra. Sm(1) is bonded to four equivalent Ho(2) and eight equivalent Ho(1) atoms to form SmHo12 cuboctahedra that share corners with four equivalent Sm(1)Ho12 cuboctahedra, corners with eight equivalent Ho(2)Sm4Ho8 cuboctahedra, edges with eight equivalent Sm(1)Ho12 cuboctahedra, edges with sixteen equivalent Ho(1)Sm4Ho8 cuboctahedra, faces with four equivalent Sm(1)Ho12 cuboctahedra, faces with six equivalent Ho(2)Sm4Ho8 cuboctahedra, and faces with eight equivalent Ho(1)Sm4Ho8 cuboctahedra. is represented by the CIF file [CIF]
data_SmHo3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.146
_cell_length_b   6.146
_cell_length_c   6.146
_cell_angle_alpha   131.654
_cell_angle_beta   131.654
_cell_angle_gamma   70.776
_symmetry_Int_Tables_number   1
_cell_volume   126.936
_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  0.000  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 material described by Ho3Sm 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 Sm(1) atoms to form HoSm4Ho8 cuboctahedra that share corners with twelve equivalent Ho(1)Sm4Ho8 cuboctahedra, edges with eight equivalent Ho(1)Sm4Ho8 cuboctahedra, edges with eight equivalent Ho(2)Sm4Ho8 cuboctahedra, edges with eight equivalent Sm(1)Ho12 cuboctahedra, faces with four equivalent Ho(2)Sm4Ho8 cuboctahedra, faces with four equivalent Sm(1)Ho12 cuboctahedra, and faces with ten equivalent Ho(1)Sm4Ho8 cuboctahedra. In the second Ho site, Ho(2) is bonded to eight equivalent Ho(1) and four equivalent Sm(1) atoms to form HoSm4Ho8 cuboctahedra that share corners with four equivalent Ho(2)Sm4Ho8 cuboctahedra, corners with eight equivalent Sm(1)Ho12 cuboctahedra, edges with eight equivalent Ho(2)Sm4Ho8 cuboctahedra, edges with sixteen equivalent Ho(1)Sm4Ho8 cuboctahedra, faces with four equivalent Ho(2)Sm4Ho8 cuboctahedra, faces with six equivalent Sm(1)Ho12 cuboctahedra, and faces with eight equivalent Ho(1)Sm4Ho8 cuboctahedra. Sm(1) is bonded to four equivalent Ho(2) and eight equivalent Ho(1) atoms to form SmHo12 cuboctahedra that share corners with four equivalent Sm(1)Ho12 cuboctahedra, corners with eight equivalent Ho(2)Sm4Ho8 cuboctahedra, edges with eight equivalent Sm(1)Ho12 cuboctahedra, edges with sixteen equivalent Ho(1)Sm4Ho8 cuboctahedra, faces with four equivalent Sm(1)Ho12 cuboctahedra, faces with six equivalent Ho(2)Sm4Ho8 cuboctahedra, and faces with eight equivalent Ho(1)Sm4Ho8 cuboctahedra. is represented by the CIF file [CIF]
data_SmHo3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.146
_cell_length_b   6.146
_cell_length_c   6.146
_cell_angle_alpha   131.654
_cell_angle_beta   131.654
_cell_angle_gamma   70.776
_symmetry_Int_Tables_number   1
_cell_volume   126.936
_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  0.000  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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