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Pr2Er4Al

Alexandria ALEX

Alex-ID: agm017195891 · Space group: I4/mmm (#139)

Alexandria Database API

Basic Information

Formula
Pr2Er4Al
Alex-ID
agm017195891
Elements
3
Sites
7
Space group
I4/mmm (#139)
Crystal system
tetragonal
Volume
210.18
ų
Cell a
16.9109
Å
Cell b
16.9109
Å
Cell c
16.9109
Å
α angle
167.97
°
β angle
167.97
°
γ angle
17.05
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
Pr2Er4Al
Pr
2.00 · 28.6%
Er
4.00 · 57.1%
Al
1.00 · 14.3%

Energy & Stability

Energy above hull
0.0287
eV/atom
Formation energy
-0.0999
eV/atom
Corrected total energy
-32.2640
eV
Raw total energy
-32.2640
eV

Electronic Structure

Indirect band gap
0.0000
eV
Direct band gap
0.0000
eV
DOS at Fermi level
8.2537
Total magnetisation
0.0000
μB

Additional Information

Prototype ID

AB2C4_1994_spg12

Decomposition

Pr2Er7 Er2Al Pr

Computed at

2025-06-08 20:50:08

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: agm017195891).

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 agm017195891
data_agm017195891
_cell_length_a     16.91086
_cell_length_b     16.91086
_cell_length_c     16.91086
_cell_angle_alpha  167.96686
_cell_angle_beta   167.96686
_cell_angle_gamma  17.04900
_cell_volume       210.17860
_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
  Pr1 Pr 0.36545 0.36545 1.00000 1.00000
  Pr2 Pr 0.63455 0.63455 0.00000 1.00000
  Er1 Er 0.21340 0.21340 1.00000 1.00000
  Er2 Er 0.78660 0.78660 0.00000 1.00000
  Er3 Er 0.05606 0.05606 1.00000 1.00000
  Er4 Er 0.94394 0.94394 0.00000 1.00000
  Al1 Al 0.50000 0.50000 0.00000 1.00000
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