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Np4BIr12

Alexandria ALEX

Alex-ID: agm099400372 · Space group: P4/mmm (#123)

Alexandria Database API

Basic Information

Formula
Np4BIr12
Alex-ID
agm099400372
Elements
3
Sites
17
Space group
P4/mmm (#123)
Crystal system
tetragonal
Volume
276.07
ų
Cell a
8.1495
Å
Cell b
8.1495
Å
Cell c
4.1567
Å
α angle
90.00
°
β angle
90.00
°
γ angle
90.00
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
Np4BIr12
Np
4.00 · 23.5%
B
1.00 · 5.9%
Ir
12.00 · 70.6%

Energy & Stability

Energy above hull
0.0430
eV/atom
Formation energy
-0.3424
eV/atom
Corrected total energy
-170.5931
eV
Raw total energy
-170.5931
eV

Electronic Structure

Indirect band gap
0.0000
eV
Direct band gap
0.0000
eV
DOS at Fermi level
46.8597
Total magnetisation
8.4628
μB

Additional Information

Prototype ID

AB4C12_333_spg123

Decomposition

NpIr3 Np3B2Ir7 Ir

Computed at

2025-04-13 05:28:36

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: agm099400372).

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 agm099400372
data_agm099400372
_cell_length_a     8.14951
_cell_length_b     8.14951
_cell_length_c     4.15673
_cell_angle_alpha  90.00000
_cell_angle_beta   90.00000
_cell_angle_gamma  90.00000
_cell_volume       276.06756
_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 0.24414 0.24414 0.00000 1.00000
  Np2 Np 0.75586 0.24414 0.00000 1.00000
  Np3 Np 0.24414 0.75586 0.00000 1.00000
  Np4 Np 0.75586 0.75586 0.00000 1.00000
  B1 B 0.50000 0.50000 0.50000 1.00000
  Ir1 Ir 0.50000 0.23852 0.50000 1.00000
  Ir2 Ir 0.00000 0.24896 0.50000 1.00000
  Ir3 Ir 0.50000 0.76148 0.50000 1.00000
  Ir4 Ir 0.00000 0.75104 0.50000 1.00000
  Ir5 Ir 0.23852 0.50000 0.50000 1.00000
  Ir6 Ir 0.76148 0.50000 0.50000 1.00000
  Ir7 Ir 0.24896 0.00000 0.50000 1.00000
  Ir8 Ir 0.75104 0.00000 0.50000 1.00000
  Ir9 Ir 0.50000 0.50000 0.00000 1.00000
  Ir10 Ir 0.00000 0.50000 0.00000 1.00000
  Ir11 Ir 0.50000 0.00000 0.00000 1.00000
  Ir12 Ir 0.00000 0.00000 0.00000 1.00000
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