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Np4Ag2S9

Alexandria ALEX

Alex-ID: agm005642842 · Space group: P-3c1 (#165)

Basic Information

Formula
Np4Ag2S9
Alex-ID
agm005642842
Elements
3
Sites
30
Space group
P-3c1 (#165)
Crystal system
trigonal
Volume
737.05
ų
Cell a
6.7496
Å
Cell b
6.7530
Å
Cell c
18.7215
Å
α angle
90.03
°
β angle
90.02
°
γ angle
59.74
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
Np4Ag2S9
Np
8.00 · 26.7%
Ag
4.00 · 13.3%
S
18.00 · 60.0%

Energy & Stability

Energy above hull
0.1167
eV/atom
Formation energy
-1.3346
eV/atom
Corrected total energy
-229.2635
eV
Raw total energy
-217.3212
eV

Electronic Structure

Indirect band gap
0.0000
eV
Direct band gap
0.0022
eV
DOS at Fermi level
73.9449
Total magnetisation
11.8918
μB

Additional Information

Prototype ID

A2B4C9_0_spg9

Decomposition

NpS2 NpS3 Ag

Computed at

2023-06-17 04:09:17.104656

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: agm005642842).

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 agm005642842
data_agm005642842
_cell_length_a     6.74956
_cell_length_b     6.75298
_cell_length_c     18.72147
_cell_angle_alpha  90.03110
_cell_angle_beta   90.02294
_cell_angle_gamma  59.73945
_cell_volume       737.04613
_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 0.33381 0.33363 0.98191 1.00000
  Np2 Np 0.33389 0.33356 0.48474 1.00000
  Np3 Np 0.66619 0.66637 0.01809 1.00000
  Np4 Np 0.33641 0.33040 0.17833 1.00000
  Np5 Np 0.66611 0.66644 0.51526 1.00000
  Np6 Np 0.66927 0.66309 0.31786 1.00000
  Np7 Np 0.33073 0.33691 0.68214 1.00000
  Np8 Np 0.66359 0.66960 0.82167 1.00000
  Ag1 Ag 0.00142 0.99834 0.34462 1.00000
  Ag2 Ag 0.00166 0.99795 0.15640 1.00000
  Ag3 Ag 0.99858 0.00166 0.65538 1.00000
  Ag4 Ag 0.99834 0.00205 0.84360 1.00000
  S1 S 0.99468 0.32856 0.74975 1.00000
  S2 S 0.32075 0.68176 0.75037 1.00000
  S3 S 0.67356 0.00212 0.75138 1.00000
  S4 S 0.00532 0.67144 0.25025 1.00000
  S5 S 0.67925 0.31824 0.24963 1.00000
  S6 S 0.32644 0.99788 0.24862 1.00000
  S7 S 0.66791 0.96301 0.42008 1.00000
  S8 S 0.96580 0.36433 0.42068 1.00000
  S9 S 0.36739 0.66797 0.41997 1.00000
  S10 S 0.63607 0.03796 0.07801 1.00000
  S11 S 0.32821 0.63213 0.07884 1.00000
  S12 S 0.04063 0.32794 0.07859 1.00000
  S13 S 0.33209 0.03699 0.57992 1.00000
  S14 S 0.03420 0.63567 0.57932 1.00000
  S15 S 0.63261 0.33203 0.58003 1.00000
  S16 S 0.36393 0.96204 0.92199 1.00000
  S17 S 0.67179 0.36787 0.92116 1.00000
  S18 S 0.95937 0.67206 0.92141 1.00000
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