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NaNp2USe4

Alexandria ALEX

Alex-ID: agm004823402 · Space group: P2/m (#10)

Alexandria Database API

Basic Information

Formula
NaNp2USe4
Alex-ID
agm004823402
Elements
4
Sites
8
Space group
P2/m (#10)
Crystal system
monoclinic
Volume
197.57
ų
Cell a
4.0568
Å
Cell b
7.1640
Å
Cell c
7.1794
Å
α angle
108.76
°
β angle
90.00
°
γ angle
90.00
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
NaNp2USe4
Na
1.00 · 12.5%
Np
2.00 · 25.0%
U
1.00 · 12.5%
Se
4.00 · 50.0%

Energy & Stability

Energy above hull
0.0864
eV/atom
Formation energy
-1.0611
eV/atom
Corrected total energy
-60.9401
eV
Raw total energy
-60.9401
eV

Electronic Structure

Indirect band gap
0.0000
eV
Direct band gap
0.0016
eV
DOS at Fermi level
26.8379
Total magnetisation
-6.0717
μB

Additional Information

Prototype ID

ABC2D4_343_spg10

Decomposition

Na3Np3USe8 Na2USe3 U2Se3 Np2Se

Computed at

2023-01-27 06:04:12.757261

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: agm004823402).

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 agm004823402
data_agm004823402
_cell_length_a     4.05679
_cell_length_b     7.16398
_cell_length_c     7.17943
_cell_angle_alpha  108.76265
_cell_angle_beta   90.00000
_cell_angle_gamma  90.00000
_cell_volume       197.56591
_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
  Na1 Na 0.50000 0.50000 0.00000 1.00000
  Np1 Np 0.50000 0.00000 0.50000 1.00000
  Np2 Np 0.00000 0.50000 0.50000 1.00000
  U1 U 0.00000 0.00000 0.00000 1.00000
  Se1 Se 0.50000 0.24977 0.24891 1.00000
  Se2 Se 0.50000 0.75023 0.75109 1.00000
  Se3 Se 0.00000 0.24742 0.74847 1.00000
  Se4 Se 0.00000 0.75258 0.25153 1.00000
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