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Ca2Si5N8

Alexandria ALEX

Alex-ID: agm003239362 · Space group: Cc (#9)

Basic Information

Formula
Ca2Si5N8
Alex-ID
agm003239362
Elements
3
Sites
30
Space group
Cc (#9)
Crystal system
monoclinic
Volume
368.01
ų
Cell a
7.7450
Å
Cell b
7.7450
Å
Cell c
9.7527
Å
α angle
69.66
°
β angle
69.66
°
γ angle
42.69
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
Ca2Si5N8
Ca
4.00 · 13.3%
N
16.00 · 53.3%
Si
10.00 · 33.3%

Energy & Stability

Energy above hull
0.0000
eV/atom
Formation energy
-1.4205
eV/atom
Corrected total energy
-232.0934
eV
Raw total energy
-232.0934
eV

Electronic Structure

Indirect band gap
3.3686
eV
Direct band gap
3.5355
eV
DOS at Fermi level
0.0000
Total magnetisation
0.0000
μB

Additional Information

Prototype ID

A2B5C8_11_spg9

Decomposition

Ca2Si5N8

Computed at

2021-12-15 05:30:41.560080

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: agm003239362).

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 agm003239362
data_agm003239362
_cell_length_a     7.74496
_cell_length_b     7.74496
_cell_length_c     9.75266
_cell_angle_alpha  69.65798
_cell_angle_beta   69.65798
_cell_angle_gamma  42.69263
_cell_volume       368.00917
_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 0.76279 0.23481 0.00279 1.00000
  Ca2 Ca 0.23481 0.76279 0.50279 1.00000
  Ca3 Ca 0.13903 0.64345 0.19596 1.00000
  Ca4 Ca 0.64345 0.13903 0.69596 1.00000
  N1 N 0.65144 0.37500 0.42979 1.00000
  N2 N 0.37500 0.65144 0.92979 1.00000
  N3 N 0.88240 0.86035 0.99698 1.00000
  N4 N 0.86035 0.88240 0.49698 1.00000
  N5 N 0.44648 0.96304 0.16958 1.00000
  N6 N 0.96304 0.44648 0.66958 1.00000
  N7 N 0.94419 0.44926 0.17598 1.00000
  N8 N 0.44926 0.94419 0.67598 1.00000
  N9 N 0.01542 0.02212 0.21765 1.00000
  N10 N 0.02212 0.01542 0.71765 1.00000
  N11 N 0.17964 0.15219 0.93528 1.00000
  N12 N 0.15219 0.17964 0.43528 1.00000
  N13 N 0.52407 0.21387 0.27301 1.00000
  N14 N 0.21387 0.52407 0.77301 1.00000
  N15 N 0.68753 0.72150 0.41601 1.00000
  N16 N 0.72150 0.68753 0.91601 1.00000
  Si1 Si 0.74759 0.13699 0.35319 1.00000
  Si2 Si 0.13699 0.74759 0.85319 1.00000
  Si3 Si 0.45391 0.03467 0.31818 1.00000
  Si4 Si 0.03467 0.45391 0.81818 1.00000
  Si5 Si 0.74245 0.74910 0.06312 1.00000
  Si6 Si 0.74910 0.74245 0.56312 1.00000
  Si7 Si 0.84544 0.42969 0.36805 1.00000
  Si8 Si 0.42969 0.84544 0.86805 1.00000
  Si9 Si 0.14641 0.14238 0.12637 1.00000
  Si10 Si 0.14238 0.14641 0.62637 1.00000
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