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Mg3(AlH2)2

Alexandria ALEX

Alex-ID: agm007262937 · Space group: C2/m (#12)

Basic Information

Formula
Mg3(AlH2)2
Alex-ID
agm007262937
Elements
3
Sites
9
Space group
C2/m (#12)
Crystal system
monoclinic
Volume
124.20
ų
Cell a
6.1920
Å
Cell b
6.1920
Å
Cell c
7.8993
Å
α angle
53.24
°
β angle
53.24
°
γ angle
31.58
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
Mg3(AlH2)2
Mg
3.00 · 33.3%
Al
2.00 · 22.2%
H
4.00 · 44.4%

Energy & Stability

Energy above hull
0.3166
eV/atom
Formation energy
0.1226
eV/atom
Corrected total energy
-24.1302
eV
Raw total energy
-24.1302
eV

Electronic Structure

Indirect band gap
0.0000
eV
Direct band gap
0.0499
eV
DOS at Fermi level
1.6741
Total magnetisation
0.0000
μB

Additional Information

Prototype ID

A2B3C4_354_spg12

Decomposition

Mg6Al7 MgAl19 MgH2

Computed at

2024-02-08 08:53:15

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: agm007262937).

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 agm007262937
data_agm007262937
_cell_length_a     6.19202
_cell_length_b     6.19202
_cell_length_c     7.89929
_cell_angle_alpha  53.23510
_cell_angle_beta   53.23510
_cell_angle_gamma  31.58335
_cell_volume       124.20357
_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 0.65739 0.65739 0.72111 1.00000
  Mg2 Mg 0.00000 0.00000 0.50000 1.00000
  Mg3 Mg 0.34261 0.34261 0.27889 1.00000
  Al1 Al 0.63113 0.63113 0.12130 1.00000
  Al2 Al 0.36887 0.36887 0.87870 1.00000
  H1 H 0.73577 0.73577 0.39913 1.00000
  H2 H 0.26423 0.26423 0.60087 1.00000
  H3 H 0.80955 0.80955 0.03569 1.00000
  H4 H 0.19045 0.19045 0.96431 1.00000
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