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SmNp2As3

Alexandria ALEX

Alex-ID: agm005653988 · Space group: Fddd (#70)

Basic Information

Formula
SmNp2As3
Alex-ID
agm005653988
Elements
3
Sites
24
Space group
Fddd (#70)
Crystal system
orthorhombic
Volume
601.30
ų
Cell a
7.1619
Å
Cell b
7.1619
Å
Cell c
13.1075
Å
α angle
100.48
°
β angle
100.48
°
γ angle
109.54
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
SmNp2As3
Sm
4.00 · 16.7%
Np
8.00 · 33.3%
As
12.00 · 50.0%

Energy & Stability

Energy above hull
0.0379
eV/atom
Formation energy
-0.9270
eV/atom
Corrected total energy
-200.4627
eV
Raw total energy
-200.4627
eV

Electronic Structure

Indirect band gap
0.0000
eV
Direct band gap
0.0014
eV
DOS at Fermi level
86.2225
Total magnetisation
0.0996
μB

Additional Information

Prototype ID

AB2C3_36_spg70

Decomposition

NpAs SmAs

Computed at

2023-08-07 05:11:21.286946

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: agm005653988).

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 agm005653988
data_agm005653988
_cell_length_a     7.16188
_cell_length_b     7.16188
_cell_length_c     13.10746
_cell_angle_alpha  100.47564
_cell_angle_beta   100.47564
_cell_angle_gamma  109.54128
_cell_volume       601.29523
_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 0.91707 0.91707 0.83414 1.00000
  Sm2 Sm 0.33293 0.83293 0.66586 1.00000
  Sm3 Sm 0.16707 0.66707 0.33414 1.00000
  Sm4 Sm 0.08293 0.08293 0.16586 1.00000
  Np1 Np 0.00072 0.50072 0.00145 1.00000
  Np2 Np 0.41603 0.41603 0.83205 1.00000
  Np3 Np 0.83397 0.33397 0.66795 1.00000
  Np4 Np 0.24928 0.24928 0.49856 1.00000
  Np5 Np 0.75072 0.75072 0.50145 1.00000
  Np6 Np 0.66603 0.16603 0.33205 1.00000
  Np7 Np 0.58397 0.58397 0.16795 1.00000
  Np8 Np 0.49928 0.99928 0.99855 1.00000
  As1 As 0.16797 0.66135 0.83573 1.00000
  As2 As 0.66776 0.17437 0.83573 1.00000
  As3 As 0.08203 0.08865 0.66427 1.00000
  As4 As 0.58224 0.57563 0.66427 1.00000
  As5 As 0.99281 0.49281 0.50000 1.00000
  As6 As 0.50719 0.00719 0.50000 1.00000
  As7 As 0.42437 0.41776 0.33573 1.00000
  As8 As 0.91135 0.91797 0.33573 1.00000
  As9 As 0.82563 0.33224 0.16427 1.00000
  As10 As 0.33865 0.83203 0.16427 1.00000
  As11 As 0.25719 0.25719 0.00000 1.00000
  As12 As 0.74281 0.74281 1.00000 1.00000
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