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HEAS Data Platform · Materials Science Database

AcSi2NiIr

Alexandria ALEX

Alex-ID: agm005018673 · Space group: I-4m2 (#119)

Basic Information

Formula
AcSi2NiIr
Alex-ID
agm005018673
Elements
4
Sites
5
Space group
I-4m2 (#119)
Crystal system
tetragonal
Volume
92.65
ų
Cell a
4.1836
Å
Cell b
4.1836
Å
Cell c
6.0640
Å
α angle
110.18
°
β angle
110.18
°
γ angle
90.00
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
AcSi2NiIr
Ac
1.00 · 20.0%
Si
2.00 · 40.0%
Ni
1.00 · 20.0%
Ir
1.00 · 20.0%

Energy & Stability

Energy above hull
0.0473
eV/atom
Formation energy
-0.7772
eV/atom
Corrected total energy
-33.4854
eV
Raw total energy
-33.4854
eV

Electronic Structure

Indirect band gap
0.0000
eV
Direct band gap
0.0221
eV
DOS at Fermi level
3.2642
Total magnetisation
0.0000
μB

Additional Information

Prototype ID

ABCD2_1563_spg119

Decomposition

Ac(SiNi)2 Ac(SiIr)2

Computed at

2022-08-04 18:20:20.637496

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: agm005018673).

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 agm005018673
data_agm005018673
_cell_length_a     4.18363
_cell_length_b     4.18363
_cell_length_c     6.06395
_cell_angle_alpha  110.17931
_cell_angle_beta   110.17931
_cell_angle_gamma  90.00000
_cell_volume       92.64923
_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
  Ac1 Ac 0.00000 0.00000 0.00000 1.00000
  Si1 Si 0.64005 0.64005 0.28010 1.00000
  Si2 Si 0.35995 0.35995 0.71990 1.00000
  Ni1 Ni 0.75000 0.25000 0.50000 1.00000
  Ir1 Ir 0.25000 0.75000 0.50000 1.00000
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