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Sr2Si2As

Alexandria ALEX

Alex-ID: agm003017129 · Space group: P4/mbm (#127)

Basic Information

Formula
Sr2Si2As
Alex-ID
agm003017129
Elements
3
Sites
10
Space group
P4/mbm (#127)
Crystal system
tetragonal
Volume
258.58
ų
Cell a
7.5232
Å
Cell b
7.5232
Å
Cell c
4.5688
Å
α angle
90.00
°
β angle
90.00
°
γ angle
90.00
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
Sr2Si2As
Sr
4.00 · 40.0%
As
2.00 · 20.0%
Si
4.00 · 40.0%

Energy & Stability

Energy above hull
0.2888
eV/atom
Formation energy
-0.3892
eV/atom
Corrected total energy
-41.6407
eV
Raw total energy
-41.6407
eV

Electronic Structure

Indirect band gap
0.0000
eV
Direct band gap
0.0000
eV
DOS at Fermi level
3.0870
Total magnetisation
0.0000
μB

Additional Information

Prototype ID

AB2C2_3_spg127

Decomposition

Sr4As3 SrSi2 Sr4SiAs4

Computed at

2017-06-28 08:25:17

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: agm003017129).

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 agm003017129
data_agm003017129
_cell_length_a     7.52318
_cell_length_b     7.52318
_cell_length_c     4.56876
_cell_angle_alpha  90.00000
_cell_angle_beta   90.00000
_cell_angle_gamma  90.00000
_cell_volume       258.58373
_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
  Sr1 Sr 0.18348 0.68348 0.50000 1.00000
  Sr2 Sr 0.68348 0.81652 0.50000 1.00000
  Sr3 Sr 0.81652 0.31652 0.50000 1.00000
  Sr4 Sr 0.31652 0.18348 0.50000 1.00000
  As1 As 0.00000 0.00000 0.00000 1.00000
  As2 As 0.50000 0.50000 0.00000 1.00000
  Si1 Si 0.38911 0.88911 0.00000 1.00000
  Si2 Si 0.88911 0.61089 0.00000 1.00000
  Si3 Si 0.61089 0.11089 0.00000 1.00000
  Si4 Si 0.11089 0.38911 0.00000 1.00000
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