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Ca4C

Alexandria ALEX

Alex-ID: agm005407415 · Space group: I4/m (#87)

Basic Information

Formula
Ca4C
Alex-ID
agm005407415
Elements
2
Sites
5
Space group
I4/m (#87)
Crystal system
tetragonal
Volume
142.18
ų
Cell a
6.7295
Å
Cell b
6.7295
Å
Cell c
6.7295
Å
α angle
93.54
°
β angle
93.54
°
γ angle
151.20
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
Ca4C
Ca
4.00 · 80.0%
C
1.00 · 20.0%

Energy & Stability

Energy above hull
0.3434
eV/atom
Formation energy
0.3391
eV/atom
Corrected total energy
-15.5367
eV
Raw total energy
-15.5367
eV

Electronic Structure

Indirect band gap
0.0000
eV
Direct band gap
0.0296
eV
DOS at Fermi level
4.5727
Total magnetisation
0.0002
μB

Additional Information

Prototype ID

AB4_43_spg87

Decomposition

Ca2C3 Ca

Computed at

2023-03-19 09:12:00.640992

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: agm005407415).

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 agm005407415
data_agm005407415
_cell_length_a     6.72949
_cell_length_b     6.72949
_cell_length_c     6.72949
_cell_angle_alpha  93.54467
_cell_angle_beta   93.54467
_cell_angle_gamma  151.20477
_cell_volume       142.18304
_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 0.27287 0.54326 0.81614 1.00000
  Ca2 Ca 0.54326 0.72713 0.27039 1.00000
  Ca3 Ca 0.72713 0.45674 0.18386 1.00000
  Ca4 Ca 0.45674 0.27287 0.72961 1.00000
  C1 C 0.00000 0.00000 0.00000 1.00000
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