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Mg3NiH8

Alexandria ALEX

Alex-ID: agm096133099 · Space group: P6_3 (#173)

Basic Information

Formula
Mg3NiH8
Alex-ID
agm096133099
Elements
3
Sites
24
Space group
P6_3 (#173)
Crystal system
hexagonal
Volume
219.74
ų
Cell a
5.9889
Å
Cell b
5.9889
Å
Cell c
7.0743
Å
α angle
90.00
°
β angle
90.00
°
γ angle
120.00
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
Mg3NiH8
Mg
6.00 · 25.0%
Ni
2.00 · 8.3%
H
16.00 · 66.7%

Energy & Stability

Energy above hull
0.1340
eV/atom
Formation energy
-0.1413
eV/atom
Corrected total energy
-76.3633
eV
Raw total energy
-76.3633
eV

Electronic Structure

Indirect band gap
0.2371
eV
Direct band gap
0.3392
eV
DOS at Fermi level
2.5507
Total magnetisation
0.0000
μB

Additional Information

Prototype ID

AB3C8_23_spg186

Decomposition

Mg2NiH4 MgH6 MgH2

Computed at

2025-05-27 08:01:21

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: agm096133099).

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 agm096133099
data_agm096133099
_cell_length_a     5.98894
_cell_length_b     5.98894
_cell_length_c     7.07430
_cell_angle_alpha  90.00000
_cell_angle_beta   90.00000
_cell_angle_gamma  120.00000
_cell_volume       219.74278
_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
  Mg1 Mg 0.61573 0.01581 0.69599 1.00000
  Mg2 Mg 0.26670 0.94941 0.19590 1.00000
  Mg3 Mg 0.98419 0.59992 0.69599 1.00000
  Mg4 Mg 0.05059 0.31729 0.19590 1.00000
  Mg5 Mg 0.40008 0.38427 0.69599 1.00000
  Mg6 Mg 0.68271 0.73330 0.19590 1.00000
  Ni1 Ni 0.66667 0.33333 0.35918 1.00000
  Ni2 Ni 0.00000 0.00000 0.85895 1.00000
  H1 H 0.45474 0.34023 0.21855 1.00000
  H2 H 0.78126 0.78831 0.71822 1.00000
  H3 H 0.65977 0.11451 0.21855 1.00000
  H4 H 0.21169 0.99295 0.71822 1.00000
  H5 H 0.88549 0.54526 0.21855 1.00000
  H6 H 0.00705 0.21874 0.71822 1.00000
  H7 H 0.21907 0.23639 0.98340 1.00000
  H8 H 0.64915 0.55239 0.48356 1.00000
  H9 H 0.76361 0.98268 0.98340 1.00000
  H10 H 0.44761 0.09676 0.48356 1.00000
  H11 H 0.01732 0.78093 0.98340 1.00000
  H12 H 0.90324 0.35085 0.48356 1.00000
  H13 H 0.33333 0.66667 0.23131 1.00000
  H14 H 0.33333 0.66667 0.73246 1.00000
  H15 H 0.66667 0.33333 0.81117 1.00000
  H16 H 0.00000 0.00000 0.31119 1.00000
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