The material described by Ho2Fe3Al is Cubic Laves-derived structured and crystallizes in the trigonal R-3m space group. Ho(1) is bonded in a 16-coordinate geometry to four equivalent Ho(1), nine equivalent Fe(1), and three equivalent Al(1) atoms. Fe(1) is bonded to six equivalent Ho(1), four equivalent Fe(1), and two equivalent Al(1) atoms to form FeHo6Al2Fe4 cuboctahedra that share corners with four equivalent Al(1)Ho6Fe6 cuboctahedra, corners with fourteen equivalent Fe(1)Ho6Al2Fe4 cuboctahedra, edges with six equivalent Fe(1)Ho6Al2Fe4 cuboctahedra, faces with six equivalent Al(1)Ho6Fe6 cuboctahedra, and faces with twelve equivalent Fe(1)Ho6Al2Fe4 cuboctahedra. Al(1) is bonded to six equivalent Ho(1) and six equivalent Fe(1) atoms to form AlHo6Fe6 cuboctahedra that share corners with six equivalent Al(1)Ho6Fe6 cuboctahedra, corners with twelve equivalent Fe(1)Ho6Al2Fe4 cuboctahedra, edges with six equivalent Al(1)Ho6Fe6 cuboctahedra, and faces with eighteen equivalent Fe(1)Ho6Al2Fe4 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ho2AlFe3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.245
_cell_length_b   5.275
_cell_length_c   5.243
_cell_angle_alpha   89.990
_cell_angle_beta   59.999
_cell_angle_gamma   119.800
_symmetry_Int_Tables_number   1
_cell_volume   102.882
_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
  Ho  Ho0  1  0.744  0.367  0.378  1.0
  Ho  Ho1  1  0.256  0.633  0.622  1.0
  Al  Al2  1  0.500  0.500  0.000  1.0
  Fe  Fe3  1  0.500  0.000  0.000  1.0
  Fe  Fe4  1  0.000  0.000  0.500  1.0
  Fe  Fe5  1  0.000  0.000  0.000  1.0
[/CIF]
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The material described by Ho2Fe3Al is Cubic Laves-derived structured and crystallizes in the trigonal R-3m space group. Ho(1) is bonded in a 16-coordinate geometry to four equivalent Ho(1), nine equivalent Fe(1), and three equivalent Al(1) atoms. Fe(1) is bonded to six equivalent Ho(1), four equivalent Fe(1), and two equivalent Al(1) atoms to form FeHo6Al2Fe4 cuboctahedra that share corners with four equivalent Al(1)Ho6Fe6 cuboctahedra, corners with fourteen equivalent Fe(1)Ho6Al2Fe4 cuboctahedra, edges with six equivalent Fe(1)Ho6Al2Fe4 cuboctahedra, faces with six equivalent Al(1)Ho6Fe6 cuboctahedra, and faces with twelve equivalent Fe(1)Ho6Al2Fe4 cuboctahedra. Al(1) is bonded to six equivalent Ho(1) and six equivalent Fe(1) atoms to form AlHo6Fe6 cuboctahedra that share corners with six equivalent Al(1)Ho6Fe6 cuboctahedra, corners with twelve equivalent Fe(1)Ho6Al2Fe4 cuboctahedra, edges with six equivalent Al(1)Ho6Fe6 cuboctahedra, and faces with eighteen equivalent Fe(1)Ho6Al2Fe4 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ho2AlFe3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.245
_cell_length_b   5.275
_cell_length_c   5.243
_cell_angle_alpha   89.990
_cell_angle_beta   59.999
_cell_angle_gamma   119.800
_symmetry_Int_Tables_number   1
_cell_volume   102.882
_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
  Ho  Ho0  1  0.744  0.367  0.378  1.0
  Ho  Ho1  1  0.256  0.633  0.622  1.0
  Al  Al2  1  0.500  0.500  0.000  1.0
  Fe  Fe3  1  0.500  0.000  0.000  1.0
  Fe  Fe4  1  0.000  0.000  0.500  1.0
  Fe  Fe5  1  0.000  0.000  0.000  1.0
[/CIF]
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