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NpU2Ni9

Alexandria ALEX

Alex-ID: agm005940468 · Space group: R-3m (#166)

Basic Information

Formula
NpU2Ni9
Alex-ID
agm005940468
Elements
3
Sites
12
Space group
R-3m (#166)
Crystal system
trigonal
Volume
167.47
ų
Cell a
4.8691
Å
Cell b
4.8691
Å
Cell c
8.6278
Å
α angle
73.61
°
β angle
73.61
°
γ angle
60.00
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
NpU2Ni9
Np
1.00 · 8.3%
U
2.00 · 16.7%
Ni
9.00 · 75.0%

Energy & Stability

Energy above hull
0.0433
eV/atom
Formation energy
-0.2024
eV/atom
Corrected total energy
-90.0004
eV
Raw total energy
-90.0004
eV

Electronic Structure

Indirect band gap
0.0000
eV
Direct band gap
0.0005
eV
DOS at Fermi level
23.3261
Total magnetisation
6.2568
μB

Additional Information

Prototype ID

AB2C9_0_spg166

Decomposition

NpUNi2 UNi5 NpNi

Computed at

2023-07-24 12:57:13.840532

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: agm005940468).

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 agm005940468
data_agm005940468
_cell_length_a     4.86907
_cell_length_b     4.86907
_cell_length_c     8.62779
_cell_angle_alpha  73.60969
_cell_angle_beta   73.60969
_cell_angle_gamma  59.99947
_cell_volume       167.47424
_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
  U1 U 0.85928 0.85928 0.42213 1.00000
  U2 U 0.14072 0.14072 0.57787 1.00000
  Ni1 Ni 0.66699 0.66699 0.99904 1.00000
  Ni2 Ni 0.33301 0.33301 0.00096 1.00000
  Ni3 Ni 0.50000 0.50000 0.50000 1.00000
  Ni4 Ni 0.41664 0.41664 0.24917 1.00000
  Ni5 Ni 0.91756 0.41663 0.24917 1.00000
  Ni6 Ni 0.41663 0.91756 0.24917 1.00000
  Ni7 Ni 0.58336 0.58336 0.75083 1.00000
  Ni8 Ni 0.58337 0.08244 0.75083 1.00000
  Ni9 Ni 0.08244 0.58337 0.75083 1.00000
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