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SrMgH4

Alexandria ALEX

Alex-ID: agm005777078 · Space group: P2_1/c (#14)

Basic Information

Formula
SrMgH4
Alex-ID
agm005777078
Elements
3
Sites
24
Space group
P2_1/c (#14)
Crystal system
monoclinic
Volume
302.90
ų
Cell a
6.9595
Å
Cell b
7.3035
Å
Cell c
6.9842
Å
α angle
90.00
°
β angle
90.00
°
γ angle
121.43
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
SrMgH4
Sr
4.00 · 16.7%
Mg
4.00 · 16.7%
H
16.00 · 66.7%

Energy & Stability

Energy above hull
0.0387
eV/atom
Formation energy
-0.4418
eV/atom
Corrected total energy
-75.5759
eV
Raw total energy
-75.5759
eV

Electronic Structure

Indirect band gap
2.2179
eV
Direct band gap
2.6289
eV
DOS at Fermi level
0.0000
Total magnetisation
0.0000
μB

Additional Information

Prototype ID

ABC4_2370_spg14

Decomposition

SrMgH4

Computed at

2023-07-10 00:31:51.777947

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: agm005777078).

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 agm005777078
data_agm005777078
_cell_length_a     6.95954
_cell_length_b     7.30352
_cell_length_c     6.98424
_cell_angle_alpha  90.00000
_cell_angle_beta   90.00000
_cell_angle_gamma  121.43430
_cell_volume       302.90198
_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
  Sr1 Sr 0.35024 0.18445 0.86509 1.00000
  Sr2 Sr 0.14976 0.31555 0.36509 1.00000
  Sr3 Sr 0.85024 0.68445 0.63491 1.00000
  Sr4 Sr 0.64976 0.81555 0.13491 1.00000
  Mg1 Mg 0.89131 0.23947 0.81529 1.00000
  Mg2 Mg 0.60869 0.26053 0.31529 1.00000
  Mg3 Mg 0.39131 0.73947 0.68471 1.00000
  Mg4 Mg 0.10869 0.76053 0.18471 1.00000
  H1 H 0.59343 0.98237 0.84141 1.00000
  H2 H 0.01255 0.09317 0.67266 1.00000
  H3 H 0.74616 0.10825 0.38062 1.00000
  H4 H 0.49915 0.31911 0.53971 1.00000
  H5 H 0.75384 0.39175 0.88062 1.00000
  H6 H 0.00085 0.18089 0.03971 1.00000
  H7 H 0.48745 0.40683 0.17266 1.00000
  H8 H 0.90657 0.51763 0.34141 1.00000
  H9 H 0.09343 0.48237 0.65859 1.00000
  H10 H 0.51255 0.59317 0.82734 1.00000
  H11 H 0.99915 0.81911 0.96029 1.00000
  H12 H 0.24616 0.60825 0.11938 1.00000
  H13 H 0.50085 0.68089 0.46029 1.00000
  H14 H 0.25384 0.89175 0.61938 1.00000
  H15 H 0.98745 0.90683 0.32734 1.00000
  H16 H 0.40657 0.01763 0.15859 1.00000
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