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K(NpTe2)2

Alexandria ALEX

Alex-ID: agm003454307 · Space group: Cmcm (#63)

Basic Information

Formula
K(NpTe2)2
Alex-ID
agm003454307
Elements
3
Sites
14
Space group
Cmcm (#63)
Crystal system
orthorhombic
Volume
505.79
ų
Cell a
4.4685
Å
Cell b
7.6854
Å
Cell c
15.3930
Å
α angle
90.00
°
β angle
90.00
°
γ angle
106.90
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
K(NpTe2)2
K
2.00 · 14.3%
Np
4.00 · 28.6%
Te
8.00 · 57.1%

Energy & Stability

Energy above hull
0.0498
eV/atom
Formation energy
-0.7345
eV/atom
Corrected total energy
-89.3843
eV
Raw total energy
-89.3843
eV

Electronic Structure

Indirect band gap
0.0000
eV
Direct band gap
0.0004
eV
DOS at Fermi level
44.7757
Total magnetisation
13.9999
μB

Additional Information

Prototype ID

AB2C4_20_spg63

Decomposition

K2(NpTe2)3 NpTe2

Computed at

2022-02-17 20:57:44.869482

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: agm003454307).

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 agm003454307
data_agm003454307
_cell_length_a     4.46845
_cell_length_b     7.68539
_cell_length_c     15.39296
_cell_angle_alpha  90.00000
_cell_angle_beta   90.00000
_cell_angle_gamma  106.90052
_cell_volume       505.79069
_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
  K1 K 0.60436 0.20872 0.75000 1.00000
  K2 K 0.39564 0.79128 0.25000 1.00000
  Np1 Np 0.13475 0.26950 0.43673 1.00000
  Np2 Np 0.86525 0.73050 0.93673 1.00000
  Np3 Np 0.13475 0.26950 0.06327 1.00000
  Np4 Np 0.86525 0.73050 0.56327 1.00000
  Te1 Te 0.76653 0.53307 0.11312 1.00000
  Te2 Te 0.76653 0.53307 0.38688 1.00000
  Te3 Te 0.23347 0.46693 0.88688 1.00000
  Te4 Te 0.23347 0.46693 0.61312 1.00000
  Te5 Te 0.92015 0.84031 0.75000 1.00000
  Te6 Te 0.07985 0.15969 0.25000 1.00000
  Te7 Te 0.50000 0.00000 0.00000 1.00000
  Te8 Te 0.50000 0.00000 0.50000 1.00000
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