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Pm2Sm2Th2Mg

Alexandria ALEX

Alex-ID: agm017607812 · Space group: I4/mmm (#139)

Basic Information

Formula
Pm2Sm2Th2Mg
Alex-ID
agm017607812
Elements
4
Sites
7
Space group
I4/mmm (#139)
Crystal system
tetragonal
Volume
224.36
ų
Cell a
3.6304
Å
Cell b
3.6304
Å
Cell c
17.2165
Å
α angle
83.93
°
β angle
96.07
°
γ angle
89.96
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
Pm2Sm2Th2Mg
Pm
2.00 · 28.6%
Sm
2.00 · 28.6%
Th
2.00 · 28.6%
Mg
1.00 · 14.3%

Energy & Stability

Energy above hull
0.0193
eV/atom
Formation energy
-0.0152
eV/atom
Corrected total energy
-35.4940
eV
Raw total energy
-35.4940
eV

Electronic Structure

Indirect band gap
0.0000
eV
Direct band gap
0.0027
eV
DOS at Fermi level
6.8084
Total magnetisation
0.0000
μB

Additional Information

Prototype ID

AB2C2D2_117_spg119

Decomposition

SmTh4 PmSmMg2 PmSm2 Pm

Computed at

2025-05-19 18:24:47

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: agm017607812).

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 agm017607812
data_agm017607812
_cell_length_a     3.63044
_cell_length_b     3.63044
_cell_length_c     17.21649
_cell_angle_alpha  83.92650
_cell_angle_beta   96.07350
_cell_angle_gamma  89.95692
_cell_volume       224.35854
_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
  Pm1 Pm 0.43339 0.56661 0.86658 1.00000
  Pm2 Pm 0.56661 0.43339 0.13342 1.00000
  Sm1 Sm 0.29060 0.70940 0.58208 1.00000
  Sm2 Sm 0.70940 0.29060 0.41792 1.00000
  Th1 Th 0.13807 0.86193 0.27615 1.00000
  Th2 Th 0.86193 0.13807 0.72385 1.00000
  Mg1 Mg 0.00000 0.00000 0.00000 1.00000
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