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K2Ca5Nb3Si4(SeO13)2

Alexandria ALEX

Alex-ID: agm010230772 · Space group: P1 (#1)

Basic Information

Formula
K2Ca5Nb3Si4(SeO13)2
Alex-ID
agm010230772
Elements
6
Sites
42
Space group
P1 (#1)
Crystal system
triclinic
Volume
603.21
ų
Cell a
5.6231
Å
Cell b
7.4374
Å
Cell c
15.0776
Å
α angle
106.71
°
β angle
92.56
°
γ angle
90.33
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
K2Ca5Nb3Si4(SeO13)2
K
2.00 · 4.8%
Ca
5.00 · 11.9%
Nb
3.00 · 7.1%
Si
4.00 · 9.5%
Se
2.00 · 4.8%
O
26.00 · 61.9%

Energy & Stability

Energy above hull
0.1487
eV/atom
Formation energy
-2.8375
eV/atom
Corrected total energy
-319.1840
eV
Raw total energy
-300.9244
eV

Electronic Structure

Indirect band gap
0.6083
eV
Direct band gap
0.8220
eV
DOS at Fermi level
-0.1874
Total magnetisation
1.0004
μB

Additional Information

Prototype ID

A2B2C3D4E5F26_0_spg1

Decomposition

CaSeO3 CaNb2O6 CaSiO3 K2SeO4 KNbSi2O7 Ca2Nb2O7

Computed at

2024-07-12 21:42:28.607879

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: agm010230772).

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 agm010230772
data_agm010230772
_cell_length_a     5.62311
_cell_length_b     7.43744
_cell_length_c     15.07763
_cell_angle_alpha  106.71416
_cell_angle_beta   92.55658
_cell_angle_gamma  90.33085
_cell_volume       603.21395
_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 0.72600 0.56795 0.31109 1.00000
  K2 K 0.21019 0.30029 0.30268 1.00000
  Ca1 Ca 0.31118 0.17437 0.67196 1.00000
  Ca2 Ca 0.95330 0.69847 0.73282 1.00000
  Ca3 Ca 0.99825 0.02372 0.98542 1.00000
  Ca4 Ca 0.36444 0.48321 0.89589 1.00000
  Ca5 Ca 0.22444 0.82251 0.32310 1.00000
  Nb1 Nb 0.38252 0.69810 0.54939 1.00000
  Nb2 Nb 0.72298 0.07150 0.32272 1.00000
  Nb3 Nb 0.06400 0.46509 0.08520 1.00000
  Si1 Si 0.57666 0.75873 0.11308 1.00000
  Si2 Si 0.87634 0.39453 0.52502 1.00000
  Si3 Si 0.56525 0.17287 0.12205 1.00000
  Si4 Si 0.87196 0.97570 0.52554 1.00000
  Se1 Se 0.85358 0.30105 0.79640 1.00000
  Se2 Se 0.43046 0.93218 0.83228 1.00000
  O1 O 0.90083 0.20877 0.56415 1.00000
  O2 O 0.94170 0.08320 0.73275 1.00000
  O3 O 0.47914 0.16200 0.81747 1.00000
  O4 O 0.11593 0.52544 0.57024 1.00000
  O5 O 0.12180 0.54176 0.21418 1.00000
  O6 O 0.81152 0.63705 0.07154 1.00000
  O7 O 0.29435 0.21851 0.09674 1.00000
  O8 O 0.12143 0.89841 0.56380 1.00000
  O9 O 0.62664 0.90928 0.56525 1.00000
  O10 O 0.85860 0.32172 0.41186 1.00000
  O11 O 0.10493 0.31504 0.95820 1.00000
  O12 O 0.63614 0.39754 0.73723 1.00000
  O13 O 0.78316 0.27145 0.08297 1.00000
  O14 O 0.21205 0.78939 0.88006 1.00000
  O15 O 0.45081 0.07119 0.39149 1.00000
  O16 O 0.87612 0.91118 0.41235 1.00000
  O17 O 0.70932 0.85607 0.85558 1.00000
  O18 O 0.36267 0.81030 0.71608 1.00000
  O19 O 0.35833 0.62895 0.42526 1.00000
  O20 O 0.61217 0.21777 0.23531 1.00000
  O21 O 0.34170 0.63098 0.06069 1.00000
  O22 O 0.99147 0.97967 0.25442 1.00000
  O23 O 0.55145 0.82267 0.22524 1.00000
  O24 O 0.09969 0.42761 0.76840 1.00000
  O25 O 0.64951 0.52863 0.56654 1.00000
  O26 O 0.60780 0.94404 0.07344 1.00000
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