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SmEr2As3

Alexandria ALEX

Alex-ID: agm034762007 · Space group: I4/mmm (#139)

Basic Information

Formula
SmEr2As3
Alex-ID
agm034762007
Elements
3
Sites
6
Space group
I4/mmm (#139)
Crystal system
tetragonal
Volume
149.29
ų
Cell a
9.2286
Å
Cell b
9.2286
Å
Cell c
9.2286
Å
α angle
154.14
°
β angle
154.14
°
γ angle
36.89
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
SmEr2As3
Sm
1.00 · 16.7%
Er
2.00 · 33.3%
As
3.00 · 50.0%

Energy & Stability

Energy above hull
0.0089
eV/atom
Formation energy
-1.5131
eV/atom
Corrected total energy
-36.8763
eV
Raw total energy
-36.8763
eV

Electronic Structure

Indirect band gap
0.0000
eV
Direct band gap
0.0078
eV
DOS at Fermi level
0.9154
Total magnetisation
0.0000
μB

Additional Information

Prototype ID

AB2C3_103_spg139

Decomposition

ErAs SmAs

Computed at

2025-04-15 04:08:21

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: agm034762007).

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 agm034762007
data_agm034762007
_cell_length_a     9.22858
_cell_length_b     9.22858
_cell_length_c     9.22858
_cell_angle_alpha  154.14326
_cell_angle_beta   154.14326
_cell_angle_gamma  36.89141
_cell_volume       149.28552
_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
  Sm1 Sm 0.50000 0.50000 0.00000 1.00000
  Er1 Er 0.16695 0.16695 0.00000 1.00000
  Er2 Er 0.83305 0.83305 0.00000 1.00000
  As1 As 0.00000 0.00000 0.00000 1.00000
  As2 As 0.33120 0.33120 0.00000 1.00000
  As3 As 0.66880 0.66880 0.00000 1.00000
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