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K7(FeSe2)4

Alexandria ALEX

Alex-ID: agm008596406 · Space group: C2/c (#15)

Basic Information

Formula
K7(FeSe2)4
Alex-ID
agm008596406
Elements
3
Sites
38
Space group
C2/c (#15)
Crystal system
monoclinic
Volume
1,096.94
ų
Cell a
10.1039
Å
Cell b
10.1039
Å
Cell c
16.2797
Å
α angle
64.86
°
β angle
115.14
°
γ angle
131.78
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
K7(FeSe2)4
K
14.00 · 36.8%
Fe
8.00 · 21.1%
Se
16.00 · 42.1%

Energy & Stability

Energy above hull
0.0000
eV/atom
Formation energy
-0.8033
eV/atom
Corrected total energy
-169.5074
eV
Raw total energy
-169.5074
eV

Electronic Structure

Indirect band gap
0.2270
eV
Direct band gap
0.2647
eV
DOS at Fermi level
9.6584
Total magnetisation
21.8995
μB

Additional Information

Prototype ID

A4B7C8_3_spg15

Decomposition

K7(FeSe2)4

Computed at

2024-12-12 16:25:02

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: agm008596406).

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 agm008596406
data_agm008596406
_cell_length_a     10.10391
_cell_length_b     10.10391
_cell_length_c     16.27966
_cell_angle_alpha  64.86109
_cell_angle_beta   115.13891
_cell_angle_gamma  131.77985
_cell_volume       1096.94008
_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 0.75740 0.75740 0.75000 1.00000
  K2 K 0.24260 0.24260 0.25000 1.00000
  K3 K 0.76077 0.74943 0.99078 1.00000
  K4 K 0.74943 0.76077 0.50922 1.00000
  K5 K 0.23923 0.25057 0.00922 1.00000
  K6 K 0.25057 0.23923 0.49078 1.00000
  K7 K 0.98222 0.50138 0.61398 1.00000
  K8 K 0.50138 0.98222 0.88602 1.00000
  K9 K 0.01778 0.49862 0.38602 1.00000
  K10 K 0.49862 0.01778 0.11398 1.00000
  K11 K 0.97680 0.49231 0.86385 1.00000
  K12 K 0.49231 0.97680 0.63615 1.00000
  K13 K 0.02320 0.50769 0.13615 1.00000
  K14 K 0.50769 0.02320 0.36385 1.00000
  Fe1 Fe 0.31129 0.42387 0.66491 1.00000
  Fe2 Fe 0.42387 0.31129 0.83509 1.00000
  Fe3 Fe 0.68871 0.57613 0.33509 1.00000
  Fe4 Fe 0.57613 0.68871 0.16491 1.00000
  Fe5 Fe 0.08993 0.20158 0.77682 1.00000
  Fe6 Fe 0.20158 0.08993 0.72318 1.00000
  Fe7 Fe 0.91007 0.79842 0.22318 1.00000
  Fe8 Fe 0.79842 0.91007 0.27682 1.00000
  Se1 Se 0.34068 0.51320 0.79218 1.00000
  Se2 Se 0.51320 0.34068 0.70782 1.00000
  Se3 Se 0.65932 0.48680 0.20782 1.00000
  Se4 Se 0.48680 0.65932 0.29218 1.00000
  Se5 Se 0.99966 0.17318 0.61709 1.00000
  Se6 Se 0.17318 0.99966 0.88291 1.00000
  Se7 Se 0.00034 0.82682 0.38291 1.00000
  Se8 Se 0.82682 0.00034 0.11709 1.00000
  Se9 Se 0.32192 0.60307 0.04239 1.00000
  Se10 Se 0.60307 0.32192 0.45761 1.00000
  Se11 Se 0.67808 0.39693 0.95761 1.00000
  Se12 Se 0.39693 0.67808 0.54239 1.00000
  Se13 Se 0.11699 0.84185 0.68264 1.00000
  Se14 Se 0.84185 0.11699 0.81736 1.00000
  Se15 Se 0.88301 0.15815 0.31736 1.00000
  Se16 Se 0.15815 0.88301 0.18264 1.00000
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