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Pm3Hf2H9

Alexandria ALEX

Alex-ID: agm006205643 · Space group: P-3m1 (#164)

Basic Information

Formula
Pm3Hf2H9
Alex-ID
agm006205643
Elements
3
Sites
14
Space group
P-3m1 (#164)
Crystal system
trigonal
Volume
173.51
ų
Cell a
5.4794
Å
Cell b
5.4794
Å
Cell c
6.6732
Å
α angle
90.00
°
β angle
90.00
°
γ angle
120.00
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
Pm3Hf2H9
Hf
2.00 · 14.3%
Pm
3.00 · 21.4%
H
9.00 · 64.3%

Energy & Stability

Energy above hull
0.2993
eV/atom
Formation energy
-0.3695
eV/atom
Corrected total energy
-68.4889
eV
Raw total energy
-68.4889
eV

Electronic Structure

Indirect band gap
0.0000
eV
Direct band gap
0.0001
eV
DOS at Fermi level
7.6574
Total magnetisation
0.0005
μB

Additional Information

Prototype ID

A2B3C9_196_spg12

Decomposition

Hf2H3 PmH2

Computed at

2024-02-02 07:29:21

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: agm006205643).

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 agm006205643
data_agm006205643
_cell_length_a     5.47936
_cell_length_b     5.47936
_cell_length_c     6.67318
_cell_angle_alpha  90.00000
_cell_angle_beta   90.00000
_cell_angle_gamma  120.00000
_cell_volume       173.50923
_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
  Hf1 Hf 0.33333 0.66667 0.84474 1.00000
  Hf2 Hf 0.66667 0.33333 0.15526 1.00000
  Pm1 Pm 0.33333 0.66667 0.35775 1.00000
  Pm2 Pm 0.00000 0.00000 0.00000 1.00000
  Pm3 Pm 0.66667 0.33333 0.64225 1.00000
  H1 H 0.83076 0.66151 0.34390 1.00000
  H2 H 0.83076 0.16924 0.34390 1.00000
  H3 H 0.50000 0.00000 0.00000 1.00000
  H4 H 0.16924 0.83076 0.65610 1.00000
  H5 H 0.66151 0.83076 0.65610 1.00000
  H6 H 0.33849 0.16924 0.34390 1.00000
  H7 H 0.16924 0.33849 0.65610 1.00000
  H8 H 0.00000 0.50000 0.00000 1.00000
  H9 H 0.50000 0.50000 0.00000 1.00000
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