Navigation

HEAS Data Platform · Materials Science Database

Ho3Al7Ir4

Alexandria ALEX

Alex-ID: agm005703366 · Space group: C2/m (#12)

Basic Information

Formula
Ho3Al7Ir4
Alex-ID
agm005703366
Elements
3
Sites
14
Space group
C2/m (#12)
Crystal system
monoclinic
Volume
252.33
ų
Cell a
4.2555
Å
Cell b
7.9296
Å
Cell c
8.3593
Å
α angle
70.83
°
β angle
75.25
°
γ angle
74.44
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
Ho3Al7Ir4
Ho
3.00 · 21.4%
Al
7.00 · 50.0%
Ir
4.00 · 28.6%

Energy & Stability

Energy above hull
0.0724
eV/atom
Formation energy
-0.8385
eV/atom
Corrected total energy
-87.1372
eV
Raw total energy
-87.1372
eV

Electronic Structure

Indirect band gap
0.0000
eV
Direct band gap
0.0509
eV
DOS at Fermi level
6.2325
Total magnetisation
0.0000
μB

Additional Information

Prototype ID

A3B4C7_8_spg12

Decomposition

HoAlIr Ho2(Al3Ir)3 AlIr

Computed at

2023-06-29 15:49:07.570658

Citation

Alexandria website
https://alexandria.icams.rub.de/
Attribution

The crystal structure and related material properties of this entry were obtained from the Alexandria database (Alex-ID: agm005703366).

Reference

Th. Cavignac, J. Schmidt, P.-P. De Breuck, A. Loew, T. F. T. Cerqueira, H.-C. Wang, A. Bochkarev, Y. Lysogorskiy, A. H. Romero, R. Drautz, S. Botti and M. A. L. Marques. AI-Driven expansion and application of the Alexandria database. J. Phys. Mater. 9, 025014 (2026). https://doi.org/10.1088/2515-7639/ae6620

BibTeX
@article{Cavignac2026Alexandria,
  author  = {Cavignac, Th{\'e}o and Schmidt, Jonathan and De Breuck, Pierre-Paul and Loew, Antoine
             and Cerqueira, Tiago F. T. and Wang, Hai-Chen and Bochkarev, Anton
             and Lysogorskiy, Yury and Romero, Aldo H. and Drautz, Ralf and Botti, Silvana
             and Marques, Miguel A. L.},
  title   = {{AI}-Driven expansion and application of the {A}lexandria database},
  journal = {Journal of Physics: Materials},
  year    = {2026},
  volume  = {9},
  number  = {2},
  pages   = {025014},
  doi     = {10.1088/2515-7639/ae6620},
  url     = {https://doi.org/10.1088/2515-7639/ae6620}
}

3D Crystal Structure Rendering

Loading 3D structure…

Style: Ball & Stick
Raw CIF Data
# CIF generated by HEAS from Alexandria entry agm005703366
data_agm005703366
_cell_length_a     4.25548
_cell_length_b     7.92956
_cell_length_c     8.35931
_cell_angle_alpha  70.82786
_cell_angle_beta   75.25396
_cell_angle_gamma  74.43507
_cell_volume       252.33216
_symmetry_space_group_name_H-M 'P 1'
_symmetry_Int_Tables_number 1
loop_
_symmetry_equiv_pos_as_xyz
  'x, y, z'
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
  Ho1 Ho 0.30560 0.18733 0.20148 1.00000
  Ho2 Ho 0.69440 0.81267 0.79852 1.00000
  Ho3 Ho 0.00000 0.50000 0.50000 1.00000
  Al1 Al 0.31574 0.84519 0.52333 1.00000
  Al2 Al 0.49467 0.21756 0.79310 1.00000
  Al3 Al 0.84268 0.39414 0.92049 1.00000
  Al4 Al 0.68426 0.15481 0.47667 1.00000
  Al5 Al 0.15732 0.60586 0.07951 1.00000
  Al6 Al 0.00000 0.00000 0.00000 1.00000
  Al7 Al 0.50533 0.78244 0.20690 1.00000
  Ir1 Ir 0.66352 0.45284 0.22013 1.00000
  Ir2 Ir 0.33648 0.54716 0.77987 1.00000
  Ir3 Ir 0.89080 0.88830 0.33010 1.00000
  Ir4 Ir 0.10920 0.11170 0.66990 1.00000
Get direct link