Navigation

HEAS Data Platform · Materials Science Database

Sm4MgGe4

Alexandria ALEX

Alex-ID: agm014093843 · Space group: Pnma (#62)

Basic Information

Formula
Sm4MgGe4
Alex-ID
agm014093843
Elements
3
Sites
36
Space group
Pnma (#62)
Crystal system
orthorhombic
Volume
872.92
ų
Cell a
7.3303
Å
Cell b
7.9399
Å
Cell c
14.9982
Å
α angle
90.00
°
β angle
90.00
°
γ angle
90.00
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
Sm4MgGe4
Sm
16.00 · 44.4%
Mg
4.00 · 11.1%
Ge
16.00 · 44.4%

Energy & Stability

Energy above hull
0.0102
eV/atom
Formation energy
-0.8066
eV/atom
Corrected total energy
-184.8689
eV
Raw total energy
-184.8689
eV

Electronic Structure

Indirect band gap
0.0000
eV
Direct band gap
0.0424
eV
DOS at Fermi level
18.0635
Total magnetisation
0.0001
μB

Additional Information

Prototype ID

AB4C4_32_spg62

Decomposition

Sm2MgGe2 SmGe

Computed at

2024-12-31 12:32:52

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: agm014093843).

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 agm014093843
data_agm014093843
_cell_length_a     7.33030
_cell_length_b     7.93986
_cell_length_c     14.99822
_cell_angle_alpha  90.00000
_cell_angle_beta   90.00000
_cell_angle_gamma  90.00000
_cell_volume       872.91943
_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
  Sm1 Sm 0.01464 0.18432 0.40405 1.00000
  Sm2 Sm 0.98536 0.81568 0.59595 1.00000
  Sm3 Sm 0.48536 0.68432 0.59595 1.00000
  Sm4 Sm 0.98536 0.81568 0.90405 1.00000
  Sm5 Sm 0.51464 0.31568 0.40405 1.00000
  Sm6 Sm 0.01464 0.18432 0.09595 1.00000
  Sm7 Sm 0.51464 0.31568 0.09595 1.00000
  Sm8 Sm 0.48536 0.68432 0.90405 1.00000
  Sm9 Sm 0.32819 0.17945 0.87224 1.00000
  Sm10 Sm 0.67181 0.82055 0.12776 1.00000
  Sm11 Sm 0.17181 0.67945 0.12776 1.00000
  Sm12 Sm 0.67181 0.82055 0.37224 1.00000
  Sm13 Sm 0.82819 0.32055 0.87224 1.00000
  Sm14 Sm 0.32819 0.17945 0.62776 1.00000
  Sm15 Sm 0.82819 0.32055 0.62776 1.00000
  Sm16 Sm 0.17181 0.67945 0.37224 1.00000
  Mg1 Mg 0.15981 0.52531 0.75000 1.00000
  Mg2 Mg 0.84019 0.47469 0.25000 1.00000
  Mg3 Mg 0.34019 0.02531 0.25000 1.00000
  Mg4 Mg 0.65981 0.97469 0.75000 1.00000
  Ge1 Ge 0.02051 0.08127 0.75000 1.00000
  Ge2 Ge 0.97949 0.91873 0.25000 1.00000
  Ge3 Ge 0.47949 0.58127 0.25000 1.00000
  Ge4 Ge 0.52051 0.41873 0.75000 1.00000
  Ge5 Ge 0.28269 0.86328 0.75000 1.00000
  Ge6 Ge 0.71731 0.13672 0.25000 1.00000
  Ge7 Ge 0.21731 0.36328 0.25000 1.00000
  Ge8 Ge 0.78269 0.63672 0.75000 1.00000
  Ge9 Ge 0.16560 0.46739 0.96455 1.00000
  Ge10 Ge 0.83440 0.53261 0.03545 1.00000
  Ge11 Ge 0.33440 0.96739 0.03545 1.00000
  Ge12 Ge 0.83440 0.53261 0.46455 1.00000
  Ge13 Ge 0.66560 0.03261 0.96455 1.00000
  Ge14 Ge 0.16560 0.46739 0.53545 1.00000
  Ge15 Ge 0.66560 0.03261 0.53545 1.00000
  Ge16 Ge 0.33440 0.96739 0.46455 1.00000
Get direct link