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Na4Cr2F9

Alexandria ALEX

Alex-ID: agm005641240 · Space group: P-1 (#2)

Basic Information

Formula
Na4Cr2F9
Alex-ID
agm005641240
Elements
3
Sites
30
Space group
P-1 (#2)
Crystal system
triclinic
Volume
411.79
ų
Cell a
5.7407
Å
Cell b
5.5603
Å
Cell c
14.8862
Å
α angle
89.37
°
β angle
90.21
°
γ angle
60.08
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
Na4Cr2F9
Na
8.00 · 26.7%
Cr
4.00 · 13.3%
F
18.00 · 60.0%

Energy & Stability

Energy above hull
0.0577
eV/atom
Formation energy
-2.9699
eV/atom
Corrected total energy
-163.7114
eV
Raw total energy
-155.6594
eV

Electronic Structure

Indirect band gap
1.4313
eV
Direct band gap
1.4339
eV
DOS at Fermi level
-0.0016
Total magnetisation
14.0000
μB

Additional Information

Prototype ID

A2B4C9_0_spg9

Decomposition

Na3CrF6 CrF2 Cr

Computed at

2023-06-17 03:10:26.679160

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: agm005641240).

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 agm005641240
data_agm005641240
_cell_length_a     5.74073
_cell_length_b     5.56033
_cell_length_c     14.88624
_cell_angle_alpha  89.37260
_cell_angle_beta   90.21393
_cell_angle_gamma  60.07771
_cell_volume       411.78698
_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
  Na1 Na 0.32938 0.33792 0.97487 1.00000
  Na2 Na 0.33632 0.33107 0.48377 1.00000
  Na3 Na 0.67062 0.66208 0.02513 1.00000
  Na4 Na 0.35884 0.32570 0.19099 1.00000
  Na5 Na 0.66368 0.66893 0.51623 1.00000
  Na6 Na 0.67455 0.66026 0.31149 1.00000
  Na7 Na 0.32545 0.33974 0.68851 1.00000
  Na8 Na 0.64116 0.67430 0.80901 1.00000
  Cr1 Cr 0.00532 0.98164 0.36117 1.00000
  Cr2 Cr 0.01682 0.99503 0.15324 1.00000
  Cr3 Cr 0.99468 0.01836 0.63883 1.00000
  Cr4 Cr 0.98318 0.00497 0.84676 1.00000
  F1 F 0.99112 0.26566 0.75193 1.00000
  F2 F 0.23910 0.71799 0.76659 1.00000
  F3 F 0.69887 0.02684 0.76880 1.00000
  F4 F 0.00888 0.73434 0.24807 1.00000
  F5 F 0.76090 0.28201 0.23341 1.00000
  F6 F 0.30113 0.97316 0.23120 1.00000
  F7 F 0.65483 0.99706 0.39953 1.00000
  F8 F 0.97656 0.31495 0.41959 1.00000
  F9 F 0.36657 0.67467 0.40681 1.00000
  F10 F 0.70438 0.02419 0.09007 1.00000
  F11 F 0.28379 0.67600 0.08689 1.00000
  F12 F 0.04822 0.27336 0.08323 1.00000
  F13 F 0.34517 0.00294 0.60047 1.00000
  F14 F 0.02344 0.68505 0.58041 1.00000
  F15 F 0.63343 0.32533 0.59319 1.00000
  F16 F 0.29562 0.97581 0.90993 1.00000
  F17 F 0.71621 0.32400 0.91311 1.00000
  F18 F 0.95178 0.72664 0.91677 1.00000
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