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HEAS Data Platform · Materials Science Database

K2NbF7

Alexandria ALEX

Alex-ID: agm078050641 · Space group: Pnma (#62)

Basic Information

Formula
K2NbF7
Alex-ID
agm078050641
Elements
3
Sites
40
Space group
Pnma (#62)
Crystal system
orthorhombic
Volume
690.64
ų
Cell a
5.9088
Å
Cell b
11.4140
Å
Cell c
10.2405
Å
α angle
90.00
°
β angle
90.00
°
γ angle
90.00
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
K2NbF7
K
8.00 · 20.0%
Nb
4.00 · 10.0%
F
28.00 · 70.0%

Energy & Stability

Energy above hull
0.0071
eV/atom
Formation energy
-3.3930
eV/atom
Corrected total energy
-224.5901
eV
Raw total energy
-224.5901
eV

Electronic Structure

Indirect band gap
4.4533
eV
Direct band gap
4.4533
eV
DOS at Fermi level
0.0000
Total magnetisation
0.4222
μB

Additional Information

Prototype ID

AB2C7_84_spg62

Decomposition

K2NbF7

Computed at

2025-01-12 21:56:15

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: agm078050641).

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 agm078050641
data_agm078050641
_cell_length_a     5.90877
_cell_length_b     11.41401
_cell_length_c     10.24046
_cell_angle_alpha  90.00000
_cell_angle_beta   90.00000
_cell_angle_gamma  90.00000
_cell_volume       690.64476
_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 0.75000 0.55862 0.87966 1.00000
  K2 K 0.25000 0.44138 0.12034 1.00000
  K3 K 0.25000 0.05862 0.62034 1.00000
  K4 K 0.75000 0.94138 0.37966 1.00000
  K5 K 0.75000 0.17038 0.97826 1.00000
  K6 K 0.25000 0.82962 0.02174 1.00000
  K7 K 0.25000 0.67038 0.52174 1.00000
  K8 K 0.75000 0.32962 0.47826 1.00000
  Nb1 Nb 0.25000 0.11320 0.25331 1.00000
  Nb2 Nb 0.75000 0.88680 0.74669 1.00000
  Nb3 Nb 0.75000 0.61320 0.24669 1.00000
  Nb4 Nb 0.25000 0.38680 0.75331 1.00000
  F1 F 0.53049 0.65109 0.10442 1.00000
  F2 F 0.46951 0.34891 0.89558 1.00000
  F3 F 0.46951 0.15109 0.39558 1.00000
  F4 F 0.53049 0.84891 0.60442 1.00000
  F5 F 0.96951 0.84891 0.60442 1.00000
  F6 F 0.03049 0.15109 0.39558 1.00000
  F7 F 0.03049 0.34891 0.89558 1.00000
  F8 F 0.96951 0.65109 0.10442 1.00000
  F9 F 0.46923 0.01317 0.15558 1.00000
  F10 F 0.53077 0.98683 0.84442 1.00000
  F11 F 0.53077 0.51317 0.34442 1.00000
  F12 F 0.46923 0.48683 0.65558 1.00000
  F13 F 0.03077 0.48683 0.65558 1.00000
  F14 F 0.96923 0.51317 0.34442 1.00000
  F15 F 0.96923 0.98683 0.84442 1.00000
  F16 F 0.03077 0.01317 0.15558 1.00000
  F17 F 0.54590 0.72998 0.32855 1.00000
  F18 F 0.45410 0.27002 0.67145 1.00000
  F19 F 0.45410 0.22998 0.17145 1.00000
  F20 F 0.54590 0.77002 0.82855 1.00000
  F21 F 0.95410 0.77002 0.82855 1.00000
  F22 F 0.04590 0.22998 0.17145 1.00000
  F23 F 0.04590 0.27002 0.67145 1.00000
  F24 F 0.95410 0.72998 0.32855 1.00000
  F25 F 0.25000 0.96607 0.36250 1.00000
  F26 F 0.75000 0.03393 0.63750 1.00000
  F27 F 0.75000 0.46607 0.13750 1.00000
  F28 F 0.25000 0.53393 0.86250 1.00000
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