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Pa2Al8Cr

Alexandria ALEX

Alex-ID: agm003534643 · Space group: P4/mmm (#123)

Basic Information

Formula
Pa2Al8Cr
Alex-ID
agm003534643
Elements
3
Sites
11
Space group
P4/mmm (#123)
Crystal system
tetragonal
Volume
210.84
ų
Cell a
4.3247
Å
Cell b
4.3247
Å
Cell c
11.2726
Å
α angle
90.00
°
β angle
90.00
°
γ angle
90.00
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
Pa2Al8Cr
Pa
2.00 · 18.2%
Al
8.00 · 72.7%
Cr
1.00 · 9.1%

Energy & Stability

Energy above hull
0.0474
eV/atom
Formation energy
-0.1910
eV/atom
Corrected total energy
-60.6856
eV
Raw total energy
-60.6856
eV

Electronic Structure

Indirect band gap
0.0000
eV
Direct band gap
0.0000
eV
DOS at Fermi level
8.4689
Total magnetisation
2.3171
μB

Additional Information

Prototype ID

AB2C8_15_spg123

Decomposition

Pa4Al12Cr Pa(Al5Cr)2

Computed at

2022-03-13 16:15:34.176052

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: agm003534643).

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 agm003534643
data_agm003534643
_cell_length_a     4.32474
_cell_length_b     4.32474
_cell_length_c     11.27263
_cell_angle_alpha  90.00000
_cell_angle_beta   90.00000
_cell_angle_gamma  90.00000
_cell_volume       210.83669
_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
  Pa1 Pa 0.00000 0.00000 0.30768 1.00000
  Pa2 Pa 0.00000 0.00000 0.69232 1.00000
  Al1 Al 0.00000 0.50000 0.50000 1.00000
  Al2 Al 0.50000 0.00000 0.50000 1.00000
  Al3 Al 0.50000 0.50000 0.31026 1.00000
  Al4 Al 0.50000 0.50000 0.68974 1.00000
  Al5 Al 0.00000 0.50000 0.12178 1.00000
  Al6 Al 0.50000 0.00000 0.12178 1.00000
  Al7 Al 0.00000 0.50000 0.87822 1.00000
  Al8 Al 0.50000 0.00000 0.87822 1.00000
  Cr1 Cr 0.00000 0.00000 0.00000 1.00000
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