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Si2GeAu2

Alexandria ALEX

Alex-ID: agm003017828 · Space group: P4/mbm (#127)

Alexandria Database API

Basic Information

Formula
Si2GeAu2
Alex-ID
agm003017828
Elements
3
Sites
10
Space group
P4/mbm (#127)
Crystal system
tetragonal
Volume
182.30
ų
Cell a
7.6049
Å
Cell b
7.6049
Å
Cell c
3.1521
Å
α angle
90.00
°
β angle
90.00
°
γ angle
90.00
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
Si2GeAu2
Ge
2.00 · 20.0%
Au
4.00 · 40.0%
Si
4.00 · 40.0%

Energy & Stability

Energy above hull
0.3552
eV/atom
Formation energy
0.3357
eV/atom
Corrected total energy
-40.6795
eV
Raw total energy
-40.6795
eV

Electronic Structure

Indirect band gap
0.0000
eV
Direct band gap
0.0886
eV
DOS at Fermi level
6.4002
Total magnetisation
0.0000
μB

Additional Information

Prototype ID

AB2C2_3_spg127

Decomposition

Ge SiAu

Computed at

2023-03-26 19:39:26.640529

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: agm003017828).

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 agm003017828
data_agm003017828
_cell_length_a     7.60488
_cell_length_b     7.60488
_cell_length_c     3.15211
_cell_angle_alpha  90.00000
_cell_angle_beta   90.00000
_cell_angle_gamma  90.00000
_cell_volume       182.30017
_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
  Ge1 Ge 0.00000 0.00000 0.00000 1.00000
  Ge2 Ge 0.50000 0.50000 0.00000 1.00000
  Au1 Au 0.13281 0.63281 0.50000 1.00000
  Au2 Au 0.63281 0.86719 0.50000 1.00000
  Au3 Au 0.86719 0.36719 0.50000 1.00000
  Au4 Au 0.36719 0.13281 0.50000 1.00000
  Si1 Si 0.32506 0.82506 0.00000 1.00000
  Si2 Si 0.82506 0.67494 0.00000 1.00000
  Si3 Si 0.67494 0.17494 0.00000 1.00000
  Si4 Si 0.17494 0.32506 0.00000 1.00000
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