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ErFeCoGe2

Alexandria ALEX

Alex-ID: agm005017338 · Space group: I-4m2 (#119)

Basic Information

Formula
ErFeCoGe2
Alex-ID
agm005017338
Elements
4
Sites
5
Space group
I-4m2 (#119)
Crystal system
tetragonal
Volume
78.76
ų
Cell a
3.9880
Å
Cell b
3.9880
Å
Cell c
5.6988
Å
α angle
110.48
°
β angle
110.48
°
γ angle
90.00
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
ErFeCoGe2
Er
1.00 · 20.0%
Fe
1.00 · 20.0%
Co
1.00 · 20.0%
Ge
2.00 · 40.0%

Energy & Stability

Energy above hull
0.0000
eV/atom
Formation energy
-0.5360
eV/atom
Corrected total energy
-32.0643
eV
Raw total energy
-32.0643
eV

Electronic Structure

Indirect band gap
0.0000
eV
Direct band gap
0.0209
eV
DOS at Fermi level
2.9486
Total magnetisation
-0.0001
μB

Additional Information

Prototype ID

ABCD2_1563_spg119

Decomposition

ErFeCoGe2

Computed at

2022-07-04 05:34:05.504600

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: agm005017338).

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 agm005017338
data_agm005017338
_cell_length_a     3.98800
_cell_length_b     3.98800
_cell_length_c     5.69884
_cell_angle_alpha  110.48098
_cell_angle_beta   110.48098
_cell_angle_gamma  90.00000
_cell_volume       78.76128
_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
  Er1 Er 0.00000 0.00000 0.00000 1.00000
  Fe1 Fe 0.75000 0.25000 0.50000 1.00000
  Co1 Co 0.25000 0.75000 0.50000 1.00000
  Ge1 Ge 0.62968 0.62968 0.25937 1.00000
  Ge2 Ge 0.37032 0.37032 0.74063 1.00000
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