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Sm2Np(FeSi)6

Alexandria ALEX

Alex-ID: agm020389605 · Space group: I4/mmm (#139)

Basic Information

Formula
Sm2Np(FeSi)6
Alex-ID
agm020389605
Elements
4
Sites
15
Space group
I4/mmm (#139)
Crystal system
tetragonal
Volume
227.13
ų
Cell a
14.5958
Å
Cell b
14.5958
Å
Cell c
14.5958
Å
α angle
164.32
°
β angle
164.32
°
γ angle
22.25
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
Sm2Np(FeSi)6
Sm
2.00 · 13.3%
Np
1.00 · 6.7%
Fe
6.00 · 40.0%
Si
6.00 · 40.0%

Energy & Stability

Energy above hull
0.0057
eV/atom
Formation energy
-0.5700
eV/atom
Corrected total energy
-114.2519
eV
Raw total energy
-114.2519
eV

Electronic Structure

Indirect band gap
0.0000
eV
Direct band gap
0.0000
eV
DOS at Fermi level
20.1932
Total magnetisation
2.4374
μB

Additional Information

Prototype ID

AB2C6D6_22_spg139

Decomposition

Sm(FeSi)2 NpFeSi FeSi

Computed at

2024-12-30 04:00:50

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: agm020389605).

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 agm020389605
data_agm020389605
_cell_length_a     14.59583
_cell_length_b     14.59583
_cell_length_c     14.59583
_cell_angle_alpha  164.31842
_cell_angle_beta   164.31842
_cell_angle_gamma  22.24744
_cell_volume       227.12841
_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
  Sm1 Sm 0.33411 0.33411 0.00000 1.00000
  Sm2 Sm 0.66589 0.66589 0.00000 1.00000
  Np1 Np 0.00000 0.00000 0.00000 1.00000
  Fe1 Fe 0.91990 0.41990 0.50000 1.00000
  Fe2 Fe 0.25000 0.75000 0.50000 1.00000
  Fe3 Fe 0.58010 0.08010 0.50000 1.00000
  Fe4 Fe 0.41990 0.91990 0.50000 1.00000
  Fe5 Fe 0.75000 0.25000 0.50000 1.00000
  Fe6 Fe 0.08010 0.58010 0.50000 1.00000
  Si1 Si 0.45725 0.45725 0.00000 1.00000
  Si2 Si 0.78830 0.78830 0.00000 1.00000
  Si3 Si 0.11986 0.11986 0.00000 1.00000
  Si4 Si 0.88014 0.88014 0.00000 1.00000
  Si5 Si 0.21170 0.21170 0.00000 1.00000
  Si6 Si 0.54275 0.54275 0.00000 1.00000
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