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KErF4

Alexandria ALEX

Alex-ID: agm005803664 · Space group: Pnma (#62)

Basic Information

Formula
KErF4
Alex-ID
agm005803664
Elements
3
Sites
24
Space group
Pnma (#62)
Crystal system
orthorhombic
Volume
339.21
ų
Cell a
3.5847
Å
Cell b
6.0920
Å
Cell c
15.5328
Å
α angle
90.00
°
β angle
90.00
°
γ angle
90.00
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
KErF4
K
4.00 · 16.7%
Er
4.00 · 16.7%
F
16.00 · 66.7%

Energy & Stability

Energy above hull
0.0352
eV/atom
Formation energy
-4.0225
eV/atom
Corrected total energy
-141.9285
eV
Raw total energy
-141.9285
eV

Electronic Structure

Indirect band gap
7.1386
eV
Direct band gap
7.2305
eV
DOS at Fermi level
0.0000
Total magnetisation
0.1455
μB

Additional Information

Prototype ID

ABC4_370_spg62

Decomposition

KErF4

Computed at

2023-07-28 07:29:03.862527

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: agm005803664).

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 agm005803664
data_agm005803664
_cell_length_a     3.58473
_cell_length_b     6.09202
_cell_length_c     15.53284
_cell_angle_alpha  90.00000
_cell_angle_beta   90.00000
_cell_angle_gamma  90.00000
_cell_volume       339.20949
_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 0.77583 0.79858 1.00000
  K2 K 0.25000 0.22417 0.20142 1.00000
  K3 K 0.25000 0.72417 0.29858 1.00000
  K4 K 0.75000 0.27583 0.70142 1.00000
  Er1 Er 0.75000 0.24952 0.44166 1.00000
  Er2 Er 0.25000 0.75048 0.55834 1.00000
  Er3 Er 0.25000 0.25048 0.94166 1.00000
  Er4 Er 0.75000 0.74952 0.05834 1.00000
  F1 F 0.75000 0.89143 0.62932 1.00000
  F2 F 0.25000 0.10857 0.37068 1.00000
  F3 F 0.25000 0.60857 0.12932 1.00000
  F4 F 0.75000 0.39143 0.87068 1.00000
  F5 F 0.75000 0.86731 0.46387 1.00000
  F6 F 0.25000 0.13269 0.53613 1.00000
  F7 F 0.25000 0.63269 0.96387 1.00000
  F8 F 0.75000 0.36731 0.03613 1.00000
  F9 F 0.75000 0.99596 0.94412 1.00000
  F10 F 0.25000 0.00404 0.05588 1.00000
  F11 F 0.25000 0.50404 0.44412 1.00000
  F12 F 0.75000 0.49596 0.55588 1.00000
  F13 F 0.75000 0.90383 0.18616 1.00000
  F14 F 0.25000 0.09617 0.81384 1.00000
  F15 F 0.25000 0.59617 0.68616 1.00000
  F16 F 0.75000 0.40383 0.31384 1.00000
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