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PmY4Tm3As8

Alexandria ALEX

Alex-ID: agm047758744 · Space group: R-3m (#166)

Basic Information

Formula
PmY4Tm3As8
Alex-ID
agm047758744
Elements
4
Sites
16
Space group
R-3m (#166)
Crystal system
trigonal
Volume
394.48
ų
Cell a
8.2328
Å
Cell b
8.2328
Å
Cell c
8.2328
Å
α angle
59.99
°
β angle
59.99
°
γ angle
59.99
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
PmY4Tm3As8
Pm
1.00 · 6.3%
Y
4.00 · 25.0%
Tm
3.00 · 18.8%
As
8.00 · 50.0%

Energy & Stability

Energy above hull
0.0075
eV/atom
Formation energy
-1.5282
eV/atom
Corrected total energy
-105.6651
eV
Raw total energy
-105.6651
eV

Electronic Structure

Indirect band gap
0.0029
eV
Direct band gap
0.0029
eV
DOS at Fermi level
2.8956
Total magnetisation
0.0000
μB

Additional Information

Prototype ID

AB3C4D8_20_spg12

Decomposition

Y3TmAs4 YTm3As4 PmAs

Computed at

2025-02-28 10:46:05

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: agm047758744).

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 agm047758744
data_agm047758744
_cell_length_a     8.23276
_cell_length_b     8.23276
_cell_length_c     8.23276
_cell_angle_alpha  59.99041
_cell_angle_beta   59.99041
_cell_angle_gamma  59.99041
_cell_volume       394.48233
_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 0.00000 0.00000 0.00000 1.00000
  Y1 Y 0.50000 0.50000 0.50000 1.00000
  Y2 Y 0.00000 0.00000 0.50000 1.00000
  Y3 Y 0.00000 0.50000 0.00000 1.00000
  Y4 Y 0.50000 0.00000 0.00000 1.00000
  Tm1 Tm 0.50000 0.00000 0.50000 1.00000
  Tm2 Tm 0.00000 0.50000 0.50000 1.00000
  Tm3 Tm 0.50000 0.50000 0.00000 1.00000
  As1 As 0.74484 0.25228 0.25228 1.00000
  As2 As 0.25228 0.74484 0.25228 1.00000
  As3 As 0.25138 0.25138 0.25138 1.00000
  As4 As 0.25228 0.25228 0.74484 1.00000
  As5 As 0.74772 0.74772 0.25516 1.00000
  As6 As 0.74862 0.74862 0.74862 1.00000
  As7 As 0.74772 0.25516 0.74772 1.00000
  As8 As 0.25516 0.74772 0.74772 1.00000
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