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Tm2MgSe4

Alexandria ALEX

Alex-ID: agm005248185 · Space group: P-1 (#2)

Basic Information

Formula
Tm2MgSe4
Alex-ID
agm005248185
Elements
3
Sites
28
Space group
P-1 (#2)
Crystal system
triclinic
Volume
876.31
ų
Cell a
7.3815
Å
Cell b
8.5325
Å
Cell c
14.1191
Å
α angle
98.33
°
β angle
95.08
°
γ angle
90.13
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
Tm2MgSe4
Tm
8.00 · 28.6%
Mg
4.00 · 14.3%
Se
16.00 · 57.1%

Energy & Stability

Energy above hull
0.1933
eV/atom
Formation energy
-1.5045
eV/atom
Corrected total energy
-140.1250
eV
Raw total energy
-140.1250
eV

Electronic Structure

Indirect band gap
2.2648
eV
Direct band gap
2.2650
eV
DOS at Fermi level
0.0000
Total magnetisation
0.0000
μB

Additional Information

Prototype ID

AB2C4_347_spg2

Decomposition

Tm2Se3 MgSe

Computed at

2023-05-11 19:06:35.650864

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: agm005248185).

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 agm005248185
data_agm005248185
_cell_length_a     7.38155
_cell_length_b     8.53250
_cell_length_c     14.11905
_cell_angle_alpha  98.33181
_cell_angle_beta   95.08223
_cell_angle_gamma  90.12780
_cell_volume       876.31372
_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 0.86518 0.30267 0.70561 1.00000
  Tm2 Tm 0.13482 0.69733 0.29439 1.00000
  Tm3 Tm 0.75628 0.12663 0.99961 1.00000
  Tm4 Tm 0.24372 0.87337 0.00039 1.00000
  Tm5 Tm 0.63237 0.44226 0.29144 1.00000
  Tm6 Tm 0.36763 0.55774 0.70856 1.00000
  Tm7 Tm 0.63249 0.95336 0.29526 1.00000
  Tm8 Tm 0.36751 0.04664 0.70474 1.00000
  Mg1 Mg 0.86684 0.80457 0.71281 1.00000
  Mg2 Mg 0.13316 0.19543 0.28719 1.00000
  Mg3 Mg 0.75078 0.62107 0.99470 1.00000
  Mg4 Mg 0.24922 0.37893 0.00530 1.00000
  Se1 Se 0.90614 0.35399 0.89716 1.00000
  Se2 Se 0.09386 0.64601 0.10284 1.00000
  Se3 Se 0.89468 0.84634 0.89662 1.00000
  Se4 Se 0.10532 0.15366 0.10338 1.00000
  Se5 Se 0.82659 0.21663 0.36659 1.00000
  Se6 Se 0.17341 0.78337 0.63341 1.00000
  Se7 Se 0.80905 0.71565 0.37061 1.00000
  Se8 Se 0.19095 0.28435 0.62939 1.00000
  Se9 Se 0.69382 0.02624 0.63403 1.00000
  Se10 Se 0.30618 0.97376 0.36597 1.00000
  Se11 Se 0.69230 0.54460 0.63577 1.00000
  Se12 Se 0.30770 0.45540 0.36423 1.00000
  Se13 Se 0.60263 0.89771 0.10313 1.00000
  Se14 Se 0.39737 0.10229 0.89687 1.00000
  Se15 Se 0.59808 0.40301 0.09973 1.00000
  Se16 Se 0.40192 0.59699 0.90027 1.00000
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