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Ca2HoF7

Alexandria ALEX

Alex-ID: agm005228411 · Space group: Cm (#8)

Basic Information

Formula
Ca2HoF7
Alex-ID
agm005228411
Elements
3
Sites
30
Space group
Cm (#8)
Crystal system
monoclinic
Volume
415.84
ų
Cell a
4.2219
Å
Cell b
4.2219
Å
Cell c
29.9623
Å
α angle
88.85
°
β angle
88.85
°
γ angle
51.15
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
Ca2HoF7
Ca
6.00 · 20.0%
Ho
3.00 · 10.0%
F
21.00 · 70.0%

Energy & Stability

Energy above hull
0.1457
eV/atom
Formation energy
-4.1971
eV/atom
Corrected total energy
-181.4915
eV
Raw total energy
-181.4915
eV

Electronic Structure

Indirect band gap
3.7502
eV
Direct band gap
4.0448
eV
DOS at Fermi level
0.0000
Total magnetisation
-0.0442
μB

Additional Information

Prototype ID

AB2C7_486_spg8

Decomposition

HoF3 CaF2

Computed at

2023-05-14 05:30:28.312804

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: agm005228411).

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 agm005228411
data_agm005228411
_cell_length_a     4.22191
_cell_length_b     4.22191
_cell_length_c     29.96229
_cell_angle_alpha  88.85479
_cell_angle_beta   88.85479
_cell_angle_gamma  51.15394
_cell_volume       415.84400
_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 0.02911 0.02911 0.00870 1.00000
  Ca2 Ca 0.76485 0.76485 0.10188 1.00000
  Ca3 Ca 0.12202 0.12202 0.21081 1.00000
  Ca4 Ca 0.47826 0.47826 0.31808 1.00000
  Ca5 Ca 0.08367 0.08367 0.43709 1.00000
  Ca6 Ca 0.35917 0.35917 0.87979 1.00000
  Ho1 Ho 0.83216 0.83216 0.53430 1.00000
  Ho2 Ho 0.40278 0.40278 0.65041 1.00000
  Ho3 Ho 0.89564 0.89564 0.76770 1.00000
  F1 F 0.08465 0.08465 0.11818 1.00000
  F2 F 0.76055 0.76055 0.17616 1.00000
  F3 F 0.44428 0.44428 0.22886 1.00000
  F4 F 0.12181 0.12181 0.28419 1.00000
  F5 F 0.77452 0.77452 0.45394 1.00000
  F6 F 0.80627 0.80627 0.33356 1.00000
  F7 F 0.50361 0.50361 0.39471 1.00000
  F8 F 0.30987 0.30987 0.57701 1.00000
  F9 F 0.43953 0.43953 0.49513 1.00000
  F10 F 0.12257 0.12257 0.51569 1.00000
  F11 F 0.99383 0.99383 0.68734 1.00000
  F12 F 0.98687 0.98687 0.60004 1.00000
  F13 F 0.28739 0.28739 0.80312 1.00000
  F14 F 0.69751 0.69751 0.64451 1.00000
  F15 F 0.59528 0.59528 0.76270 1.00000
  F16 F 0.30719 0.30719 0.71992 1.00000
  F17 F 0.93688 0.93688 0.94628 1.00000
  F18 F 0.96609 0.96609 0.83921 1.00000
  F19 F 0.66253 0.66253 0.89361 1.00000
  F20 F 0.70873 0.70873 0.02268 1.00000
  F21 F 0.40516 0.40516 0.06497 1.00000
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