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KCa2

Alexandria ALEX

Alex-ID: agm005447989 · Space group: I4_1/amd (#141)

Basic Information

Formula
KCa2
Alex-ID
agm005447989
Elements
2
Sites
6
Space group
I4_1/amd (#141)
Crystal system
tetragonal
Volume
300.74
ų
Cell a
20.5134
Å
Cell b
20.5134
Å
Cell c
20.5134
Å
α angle
169.24
°
β angle
169.24
°
γ angle
15.24
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
KCa2
K
2.00 · 33.3%
Ca
4.00 · 66.7%

Energy & Stability

Energy above hull
0.2308
eV/atom
Formation energy
0.2308
eV/atom
Corrected total energy
-8.8277
eV
Raw total energy
-8.8277
eV

Electronic Structure

Indirect band gap
0.0000
eV
Direct band gap
0.0044
eV
DOS at Fermi level
6.9941
Total magnetisation
0.0000
μB

Additional Information

Prototype ID

AB2_1922_spg141

Decomposition

Ca K

Computed at

2023-03-22 22:24:58.941876

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: agm005447989).

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 agm005447989
data_agm005447989
_cell_length_a     20.51345
_cell_length_b     20.51345
_cell_length_c     20.51345
_cell_angle_alpha  169.24216
_cell_angle_beta   169.24216
_cell_angle_gamma  15.23640
_cell_volume       300.74226
_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
  K1 K 0.00000 0.00000 0.00000 1.00000
  K2 K 0.75000 0.25000 0.50000 1.00000
  Ca1 Ca 0.58518 0.58518 0.00000 1.00000
  Ca2 Ca 0.16482 0.66482 0.50000 1.00000
  Ca3 Ca 0.41482 0.41482 0.00000 1.00000
  Ca4 Ca 0.33518 0.83518 0.50000 1.00000
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