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RbNaMgH4

Alexandria ALEX

Alex-ID: agm007655041 · Space group: Cmcm (#63)

Basic Information

Formula
RbNaMgH4
Alex-ID
agm007655041
Elements
4
Sites
14
Space group
Cmcm (#63)
Crystal system
orthorhombic
Volume
270.07
ų
Cell a
6.3619
Å
Cell b
6.3619
Å
Cell c
7.2514
Å
α angle
90.00
°
β angle
90.00
°
γ angle
113.04
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
RbNaMgH4
Rb
2.00 · 14.3%
Na
2.00 · 14.3%
Mg
2.00 · 14.3%
H
8.00 · 57.1%

Energy & Stability

Energy above hull
0.0727
eV/atom
Formation energy
-0.2314
eV/atom
Corrected total energy
-36.9194
eV
Raw total energy
-36.9194
eV

Electronic Structure

Indirect band gap
3.1557
eV
Direct band gap
3.4286
eV
DOS at Fermi level
0.0000
Total magnetisation
0.0000
μB

Additional Information

Prototype ID

ABCD4_30_spg63

Decomposition

RbMgH3 NaH

Computed at

2024-02-09 11:57:15

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: agm007655041).

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 agm007655041
data_agm007655041
_cell_length_a     6.36185
_cell_length_b     6.36185
_cell_length_c     7.25141
_cell_angle_alpha  90.00000
_cell_angle_beta   90.00000
_cell_angle_gamma  113.04479
_cell_volume       270.06702
_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
  Rb1 Rb 0.00000 0.00000 0.50000 1.00000
  Rb2 Rb 0.00000 0.00000 0.00000 1.00000
  Na1 Na 0.34919 0.65081 0.25000 1.00000
  Na2 Na 0.65081 0.34919 0.75000 1.00000
  Mg1 Mg 0.63860 0.36140 0.25000 1.00000
  Mg2 Mg 0.36140 0.63860 0.75000 1.00000
  H1 H 0.67814 0.72288 0.75000 1.00000
  H2 H 0.27712 0.32186 0.75000 1.00000
  H3 H 0.26681 0.73319 0.96498 1.00000
  H4 H 0.26681 0.73319 0.53502 1.00000
  H5 H 0.73319 0.26681 0.03502 1.00000
  H6 H 0.73319 0.26681 0.46498 1.00000
  H7 H 0.32186 0.27712 0.25000 1.00000
  H8 H 0.72288 0.67814 0.25000 1.00000
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