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Ba2Al2Si

Alexandria ALEX

Alex-ID: agm002954940 · Space group: P4/mbm (#127)

Basic Information

Formula
Ba2Al2Si
Alex-ID
agm002954940
Elements
3
Sites
10
Space group
P4/mbm (#127)
Crystal system
tetragonal
Volume
287.38
ų
Cell a
7.2408
Å
Cell b
7.2408
Å
Cell c
5.4813
Å
α angle
90.00
°
β angle
90.00
°
γ angle
90.00
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
Ba2Al2Si
Si
2.00 · 20.0%
Ba
4.00 · 40.0%
Al
4.00 · 40.0%

Energy & Stability

Energy above hull
0.2953
eV/atom
Formation energy
-0.0316
eV/atom
Corrected total energy
-33.8355
eV
Raw total energy
-33.8355
eV

Electronic Structure

Indirect band gap
0.0000
eV
Direct band gap
0.0000
eV
DOS at Fermi level
4.7706
Total magnetisation
0.0000
μB

Additional Information

Prototype ID

AB2C2_35_spg127

Decomposition

Ba3(AlSi)2 BaAl2

Computed at

2017-07-27 05:30:01

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: agm002954940).

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 agm002954940
data_agm002954940
_cell_length_a     7.24081
_cell_length_b     7.24081
_cell_length_c     5.48134
_cell_angle_alpha  90.00000
_cell_angle_beta   90.00000
_cell_angle_gamma  90.00000
_cell_volume       287.38329
_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
  Si1 Si 0.00000 0.00000 0.00000 1.00000
  Si2 Si 0.50000 0.50000 0.00000 1.00000
  Ba1 Ba 0.17851 0.67851 0.50000 1.00000
  Ba2 Ba 0.67851 0.82149 0.50000 1.00000
  Ba3 Ba 0.82149 0.32149 0.50000 1.00000
  Ba4 Ba 0.32149 0.17851 0.50000 1.00000
  Al1 Al 0.36745 0.86745 0.00000 1.00000
  Al2 Al 0.86745 0.63255 0.00000 1.00000
  Al3 Al 0.63255 0.13255 0.00000 1.00000
  Al4 Al 0.13255 0.36745 0.00000 1.00000
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