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HEAS Data Platform · Materials Science Database

KNa2NiF5

Alexandria ALEX

Alex-ID: agm005178125 · Space group: Immm (#71)

Basic Information

Formula
KNa2NiF5
Alex-ID
agm005178125
Elements
4
Sites
9
Space group
Immm (#71)
Crystal system
orthorhombic
Volume
126.99
ų
Cell a
3.9497
Å
Cell b
5.8269
Å
Cell c
6.5449
Å
α angle
116.43
°
β angle
107.56
°
γ angle
90.00
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
KNa2NiF5
K
1.00 · 11.1%
Na
2.00 · 22.2%
Ni
1.00 · 11.1%
F
5.00 · 55.6%

Energy & Stability

Energy above hull
0.0238
eV/atom
Formation energy
-2.6996
eV/atom
Corrected total energy
-40.9237
eV
Raw total energy
-38.7597
eV

Electronic Structure

Indirect band gap
4.7894
eV
Direct band gap
4.9520
eV
DOS at Fermi level
0.0000
Total magnetisation
2.0000
μB

Additional Information

Prototype ID

ABC2D5_365_spg71

Decomposition

Na6NiF8 K3Ni2F7

Computed at

2023-01-20 13:31:39.658198

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: agm005178125).

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 agm005178125
data_agm005178125
_cell_length_a     3.94968
_cell_length_b     5.82689
_cell_length_c     6.54493
_cell_angle_alpha  116.43263
_cell_angle_beta   107.56192
_cell_angle_gamma  90.00000
_cell_volume       126.99232
_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 0.50000 0.00000 1.00000
  Na1 Na 0.21395 0.21395 0.42790 1.00000
  Na2 Na 0.78605 0.78605 0.57210 1.00000
  Ni1 Ni 0.50000 0.00000 0.00000 1.00000
  F1 F 0.63475 0.89784 0.26950 1.00000
  F2 F 0.36525 0.10216 0.73050 1.00000
  F3 F 0.36525 0.62834 0.73050 1.00000
  F4 F 0.63475 0.37166 0.26950 1.00000
  F5 F 0.00000 0.00000 0.00000 1.00000
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