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Tm(AlH2)4

Alexandria ALEX

Alex-ID: agm007339918 · Space group: C2/m (#12)

Basic Information

Formula
Tm(AlH2)4
Alex-ID
agm007339918
Elements
3
Sites
13
Space group
C2/m (#12)
Crystal system
monoclinic
Volume
147.64
ų
Cell a
5.5782
Å
Cell b
5.5782
Å
Cell c
6.7617
Å
α angle
57.98
°
β angle
57.98
°
γ angle
82.80
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
Tm(AlH2)4
Tm
1.00 · 7.7%
Al
4.00 · 30.8%
H
8.00 · 61.5%

Energy & Stability

Energy above hull
0.3413
eV/atom
Formation energy
0.0601
eV/atom
Corrected total energy
-44.5902
eV
Raw total energy
-44.5902
eV

Electronic Structure

Indirect band gap
0.0000
eV
Direct band gap
0.0000
eV
DOS at Fermi level
2.6400
Total magnetisation
0.0000
μB

Additional Information

Prototype ID

AB4C8_480_spg12

Decomposition

AlH3 TmH3 Al

Computed at

2024-02-09 08:32:55

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: agm007339918).

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 agm007339918
data_agm007339918
_cell_length_a     5.57818
_cell_length_b     5.57818
_cell_length_c     6.76168
_cell_angle_alpha  57.97682
_cell_angle_beta   57.97682
_cell_angle_gamma  82.79899
_cell_volume       147.64171
_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
  Tm1 Tm 0.50000 0.50000 0.50000 1.00000
  Al1 Al 0.00000 0.00000 0.00000 1.00000
  Al2 Al 0.50000 0.00000 0.00000 1.00000
  Al3 Al 0.50000 0.50000 0.00000 1.00000
  Al4 Al 0.00000 0.50000 0.00000 1.00000
  H1 H 0.78036 0.78036 0.81521 1.00000
  H2 H 0.21964 0.21964 0.18479 1.00000
  H3 H 0.38826 0.68940 0.74704 1.00000
  H4 H 0.31060 0.61174 0.25296 1.00000
  H5 H 0.61174 0.31060 0.25296 1.00000
  H6 H 0.82948 0.82948 0.35496 1.00000
  H7 H 0.17052 0.17052 0.64504 1.00000
  H8 H 0.68940 0.38826 0.74704 1.00000
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