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Er2Cu(Se2O7)2

Alexandria ALEX

Alex-ID: agm010689299 · Space group: P-1 (#2)

Alexandria Database API

Basic Information

Formula
Er2Cu(Se2O7)2
Alex-ID
agm010689299
Elements
4
Sites
21
Space group
P-1 (#2)
Crystal system
triclinic
Volume
346.29
ų
Cell a
5.5552
Å
Cell b
8.4316
Å
Cell c
8.5456
Å
α angle
65.02
°
β angle
80.55
°
γ angle
72.82
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
Er2Cu(Se2O7)2
Er
2.00 · 9.5%
Cu
1.00 · 4.8%
Se
4.00 · 19.0%
O
14.00 · 66.7%

Energy & Stability

Energy above hull
0.0004
eV/atom
Formation energy
-1.9153
eV/atom
Corrected total energy
-136.8833
eV
Raw total energy
-127.0512
eV

Electronic Structure

Indirect band gap
0.8544
eV
Direct band gap
0.9706
eV
DOS at Fermi level
-0.1154
Total magnetisation
1.0000
μB

Additional Information

Prototype ID

AB2C4D14_48_spg2

Decomposition

CuSeO3 Er2Se3O10 Er2(SeO4)3

Computed at

2024-12-09 00:00:42

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: agm010689299).

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 agm010689299
data_agm010689299
_cell_length_a     5.55524
_cell_length_b     8.43163
_cell_length_c     8.54556
_cell_angle_alpha  65.02292
_cell_angle_beta   80.55108
_cell_angle_gamma  72.82127
_cell_volume       346.29006
_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 0.16733 0.02503 0.27590 1.00000
  Er2 Er 0.83267 0.97497 0.72410 1.00000
  Cu1 Cu 0.00000 0.50000 0.00000 1.00000
  Se1 Se 0.60401 0.29608 0.28614 1.00000
  Se2 Se 0.39599 0.70392 0.71386 1.00000
  Se3 Se 0.80145 0.77545 0.20103 1.00000
  Se4 Se 0.19855 0.22455 0.79897 1.00000
  O1 O 0.02319 0.79039 0.29976 1.00000
  O2 O 0.97681 0.20961 0.70024 1.00000
  O3 O 0.87802 0.56642 0.19953 1.00000
  O4 O 0.12198 0.43358 0.80047 1.00000
  O5 O 0.53140 0.79779 0.31769 1.00000
  O6 O 0.46860 0.20221 0.68231 1.00000
  O7 O 0.76827 0.93623 0.00277 1.00000
  O8 O 0.23173 0.06377 0.99723 1.00000
  O9 O 0.78866 0.09704 0.43189 1.00000
  O10 O 0.21134 0.90296 0.56811 1.00000
  O11 O 0.39095 0.22329 0.22909 1.00000
  O12 O 0.60905 0.77671 0.77091 1.00000
  O13 O 0.84505 0.29636 0.12043 1.00000
  O14 O 0.15495 0.70364 0.87957 1.00000
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