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NpNb7N8

Alexandria ALEX

Alex-ID: agm044133403 · Space group: Fm-3m (#225)

Basic Information

Formula
NpNb7N8
Alex-ID
agm044133403
Elements
3
Sites
16
Space group
Fm-3m (#225)
Crystal system
cubic
Volume
181.18
ų
Cell a
6.3515
Å
Cell b
6.3515
Å
Cell c
6.3515
Å
α angle
60.00
°
β angle
60.00
°
γ angle
60.00
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
NpNb7N8
Np
1.00 · 6.3%
Nb
7.00 · 43.8%
N
8.00 · 50.0%

Energy & Stability

Energy above hull
0.1181
eV/atom
Formation energy
-1.1694
eV/atom
Corrected total energy
-165.7595
eV
Raw total energy
-165.7594
eV

Electronic Structure

Indirect band gap
0.0000
eV
Direct band gap
0.0003
eV
DOS at Fermi level
11.4800
Total magnetisation
2.2333
μB

Additional Information

Prototype ID

AB7C8_4_spg225

Decomposition

NpNbN2 NbN

Computed at

2024-08-08 03:05:20.492240

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: agm044133403).

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 agm044133403
data_agm044133403
_cell_length_a     6.35152
_cell_length_b     6.35152
_cell_length_c     6.35152
_cell_angle_alpha  60.00010
_cell_angle_beta   60.00010
_cell_angle_gamma  60.00010
_cell_volume       181.18336
_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
  Np1 Np 0.00000 0.00000 0.00000 1.00000
  Nb1 Nb 0.50000 0.50000 0.50000 1.00000
  Nb2 Nb 0.50000 0.00000 0.00000 1.00000
  Nb3 Nb 0.00000 0.50000 0.00000 1.00000
  Nb4 Nb 0.00000 0.00000 0.50000 1.00000
  Nb5 Nb 0.50000 0.00000 0.50000 1.00000
  Nb6 Nb 0.50000 0.50000 0.00000 1.00000
  Nb7 Nb 0.00000 0.50000 0.50000 1.00000
  N1 N 0.25576 0.25576 0.74423 1.00000
  N2 N 0.25576 0.74423 0.25576 1.00000
  N3 N 0.25001 0.25001 0.25001 1.00000
  N4 N 0.74423 0.25576 0.25576 1.00000
  N5 N 0.25577 0.74424 0.74424 1.00000
  N6 N 0.74999 0.74999 0.74999 1.00000
  N7 N 0.74424 0.25577 0.74424 1.00000
  N8 N 0.74424 0.74424 0.25577 1.00000
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