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EuMgH4

Alexandria ALEX

Alex-ID: agm091017906 · Space group: Pna2_1 (#33)

Basic Information

Formula
EuMgH4
Alex-ID
agm091017906
Elements
3
Sites
24
Space group
Pna2_1 (#33)
Crystal system
orthorhombic
Volume
256.88
ų
Cell a
6.6861
Å
Cell b
5.7242
Å
Cell c
6.7117
Å
α angle
90.00
°
β angle
90.07
°
γ angle
90.00
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
EuMgH4
Eu
4.00 · 16.7%
Mg
4.00 · 16.7%
H
16.00 · 66.7%

Energy & Stability

Energy above hull
0.0259
eV/atom
Formation energy
-0.4626
eV/atom
Corrected total energy
-110.4151
eV
Raw total energy
-110.4151
eV

Electronic Structure

Indirect band gap
0.2076
eV
Direct band gap
0.2115
eV
DOS at Fermi level
-0.5054
Total magnetisation
28.0003
μB

Additional Information

Prototype ID

ABC4_23_spg33

Decomposition

Eu2MgH6 Eu(MgH3)2

Computed at

2025-05-26 23:17:23

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: agm091017906).

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 agm091017906
data_agm091017906
_cell_length_a     6.68613
_cell_length_b     5.72421
_cell_length_c     6.71172
_cell_angle_alpha  90.00000
_cell_angle_beta   90.07134
_cell_angle_gamma  90.00000
_cell_volume       256.87601
_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
  Eu1 Eu 0.37356 0.26747 0.60291 1.00000
  Eu2 Eu 0.62644 0.76747 0.39709 1.00000
  Eu3 Eu 0.87301 0.76759 0.89714 1.00000
  Eu4 Eu 0.12699 0.26759 0.10286 1.00000
  Mg1 Mg 0.37549 0.74661 0.87799 1.00000
  Mg2 Mg 0.62451 0.24661 0.12201 1.00000
  Mg3 Mg 0.87605 0.24668 0.62175 1.00000
  Mg4 Mg 0.12395 0.74668 0.37825 1.00000
  H1 H 0.81393 0.49999 0.16140 1.00000
  H2 H 0.43074 0.39177 0.93243 1.00000
  H3 H 0.41966 0.43183 0.28481 1.00000
  H4 H 0.93027 0.89093 0.56762 1.00000
  H5 H 0.58034 0.93183 0.71519 1.00000
  H6 H 0.06973 0.39093 0.43238 1.00000
  H7 H 0.18607 0.99999 0.83860 1.00000
  H8 H 0.56926 0.89177 0.06757 1.00000
  H9 H 0.08082 0.43295 0.78481 1.00000
  H10 H 0.91918 0.93295 0.21519 1.00000
  H11 H 0.68644 0.49983 0.66092 1.00000
  H12 H 0.31356 0.99983 0.33908 1.00000
  H13 H 0.82596 0.16496 0.91070 1.00000
  H14 H 0.17404 0.66496 0.08930 1.00000
  H15 H 0.32609 0.66457 0.58875 1.00000
  H16 H 0.67391 0.16457 0.41125 1.00000
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