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Ca2FeF7

Alexandria ALEX

Alex-ID: agm022366249 · Space group: Pnma (#62)

Basic Information

Formula
Ca2FeF7
Alex-ID
agm022366249
Elements
3
Sites
40
Space group
Pnma (#62)
Crystal system
orthorhombic
Volume
567.95
ų
Cell a
7.1973
Å
Cell b
7.9656
Å
Cell c
9.9065
Å
α angle
90.00
°
β angle
90.00
°
γ angle
90.00
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
Ca2FeF7
Ca
8.00 · 20.0%
Fe
4.00 · 10.0%
F
28.00 · 70.0%

Energy & Stability

Energy above hull
0.0091
eV/atom
Formation energy
-3.6579
eV/atom
Corrected total energy
-235.9596
eV
Raw total energy
-225.0276
eV

Electronic Structure

Indirect band gap
4.0066
eV
Direct band gap
4.0066
eV
DOS at Fermi level
0.0000
Total magnetisation
19.9111
μB

Additional Information

Prototype ID

AB2C7_31_spg62

Decomposition

CaFeF5 CaF2

Computed at

2025-03-04 14:18:21

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: agm022366249).

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 agm022366249
data_agm022366249
_cell_length_a     7.19726
_cell_length_b     7.96564
_cell_length_c     9.90654
_cell_angle_alpha  90.00000
_cell_angle_beta   90.00000
_cell_angle_gamma  90.00000
_cell_volume       567.94987
_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
  Ca1 Ca 0.75000 0.81321 0.09803 1.00000
  Ca2 Ca 0.25000 0.18679 0.90197 1.00000
  Ca3 Ca 0.25000 0.68679 0.59803 1.00000
  Ca4 Ca 0.75000 0.31321 0.40197 1.00000
  Ca5 Ca 0.75000 0.62363 0.75587 1.00000
  Ca6 Ca 0.25000 0.37637 0.24413 1.00000
  Ca7 Ca 0.25000 0.87637 0.25587 1.00000
  Ca8 Ca 0.75000 0.12363 0.74413 1.00000
  Fe1 Fe 0.75000 0.81774 0.44233 1.00000
  Fe2 Fe 0.25000 0.18226 0.55767 1.00000
  Fe3 Fe 0.25000 0.68226 0.94233 1.00000
  Fe4 Fe 0.75000 0.31774 0.05767 1.00000
  F1 F 0.75000 0.59188 0.37545 1.00000
  F2 F 0.25000 0.40812 0.62455 1.00000
  F3 F 0.25000 0.90812 0.87545 1.00000
  F4 F 0.75000 0.09188 0.12455 1.00000
  F5 F 0.75000 0.54817 0.98596 1.00000
  F6 F 0.25000 0.45183 0.01404 1.00000
  F7 F 0.25000 0.95183 0.48596 1.00000
  F8 F 0.75000 0.04817 0.51404 1.00000
  F9 F 0.56724 0.75058 0.58029 1.00000
  F10 F 0.43276 0.24942 0.41971 1.00000
  F11 F 0.43276 0.74942 0.08029 1.00000
  F12 F 0.06724 0.24942 0.41971 1.00000
  F13 F 0.56724 0.25058 0.91971 1.00000
  F14 F 0.93276 0.75058 0.58029 1.00000
  F15 F 0.93276 0.25058 0.91971 1.00000
  F16 F 0.06724 0.74942 0.08029 1.00000
  F17 F 0.75000 0.87889 0.86683 1.00000
  F18 F 0.25000 0.12111 0.13317 1.00000
  F19 F 0.25000 0.62111 0.36683 1.00000
  F20 F 0.75000 0.37889 0.63317 1.00000
  F21 F 0.06668 0.62464 0.80536 1.00000
  F22 F 0.93332 0.37536 0.19464 1.00000
  F23 F 0.93332 0.87536 0.30536 1.00000
  F24 F 0.56668 0.37536 0.19464 1.00000
  F25 F 0.06668 0.12464 0.69464 1.00000
  F26 F 0.43332 0.62464 0.80536 1.00000
  F27 F 0.43332 0.12464 0.69464 1.00000
  F28 F 0.56668 0.87536 0.30536 1.00000
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