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Ca3Al8Cr3O20

Alexandria ALEX

Alex-ID: agm008686124 · Space group: C2/m (#12)

Basic Information

Formula
Ca3Al8Cr3O20
Alex-ID
agm008686124
Elements
4
Sites
34
Space group
C2/m (#12)
Crystal system
monoclinic
Volume
416.75
ų
Cell a
9.4414
Å
Cell b
9.4414
Å
Cell c
5.0834
Å
α angle
76.13
°
β angle
103.87
°
γ angle
105.28
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
Ca3Al8Cr3O20
Ca
3.00 · 8.8%
Al
8.00 · 23.5%
Cr
3.00 · 8.8%
O
20.00 · 58.8%

Energy & Stability

Energy above hull
0.0239
eV/atom
Formation energy
-3.1645
eV/atom
Corrected total energy
-271.5972
eV
Raw total energy
-251.5124
eV

Electronic Structure

Indirect band gap
1.0626
eV
Direct band gap
1.0626
eV
DOS at Fermi level
-0.0368
Total magnetisation
8.0000
μB

Additional Information

Prototype ID

A3B3C8D20_0_spg12

Decomposition

CaAl4O7 CaCrO4 CaCr2O4 Cr2O3

Computed at

2024-12-03 20:31:03

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: agm008686124).

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 agm008686124
data_agm008686124
_cell_length_a     9.44142
_cell_length_b     9.44142
_cell_length_c     5.08337
_cell_angle_alpha  76.12644
_cell_angle_beta   103.87356
_cell_angle_gamma  105.27838
_cell_volume       416.75371
_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
  Ca1 Ca 0.76283 0.23717 0.67875 1.00000
  Ca2 Ca 0.23717 0.76283 0.32125 1.00000
  Ca3 Ca 0.50000 0.50000 0.50000 1.00000
  Al1 Al 0.08243 0.35954 0.39848 1.00000
  Al2 Al 0.91757 0.64046 0.60152 1.00000
  Al3 Al 0.35954 0.08243 0.60152 1.00000
  Al4 Al 0.64046 0.91757 0.39848 1.00000
  Al5 Al 0.77758 0.49195 0.12541 1.00000
  Al6 Al 0.22242 0.50805 0.87459 1.00000
  Al7 Al 0.49195 0.77758 0.87459 1.00000
  Al8 Al 0.50805 0.22242 0.12541 1.00000
  Cr1 Cr 0.13129 0.13129 0.00000 1.00000
  Cr2 Cr 0.86871 0.86871 0.00000 1.00000
  Cr3 Cr 0.00000 0.00000 0.50000 1.00000
  O1 O 0.21967 0.49868 0.22705 1.00000
  O2 O 0.78033 0.50132 0.77295 1.00000
  O3 O 0.49868 0.21967 0.77295 1.00000
  O4 O 0.50132 0.78033 0.22705 1.00000
  O5 O 0.89995 0.38585 0.35158 1.00000
  O6 O 0.10005 0.61415 0.64842 1.00000
  O7 O 0.38585 0.89995 0.64842 1.00000
  O8 O 0.61415 0.10005 0.35158 1.00000
  O9 O 0.92609 0.07391 0.76525 1.00000
  O10 O 0.07391 0.92609 0.23475 1.00000
  O11 O 0.83216 0.66419 0.24315 1.00000
  O12 O 0.16784 0.33581 0.75685 1.00000
  O13 O 0.66419 0.83216 0.75685 1.00000
  O14 O 0.33581 0.16784 0.24315 1.00000
  O15 O 0.04793 0.19259 0.26718 1.00000
  O16 O 0.95207 0.80741 0.73282 1.00000
  O17 O 0.19259 0.04793 0.73282 1.00000
  O18 O 0.80741 0.95207 0.26718 1.00000
  O19 O 0.59894 0.40106 0.20654 1.00000
  O20 O 0.40106 0.59894 0.79346 1.00000
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