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Na4Ca2HfSb4

Alexandria ALEX

Alex-ID: agm020013865 · Space group: Cc (#9)

Basic Information

Formula
Na4Ca2HfSb4
Alex-ID
agm020013865
Elements
4
Sites
22
Space group
Cc (#9)
Crystal system
monoclinic
Volume
708.59
ų
Cell a
10.2113
Å
Cell b
10.2113
Å
Cell c
7.8673
Å
α angle
88.63
°
β angle
91.37
°
γ angle
59.86
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
Na4Ca2HfSb4
Na
8.00 · 36.4%
Ca
4.00 · 18.2%
Hf
2.00 · 9.1%
Sb
8.00 · 36.4%

Energy & Stability

Energy above hull
0.0000
eV/atom
Formation energy
-0.6385
eV/atom
Corrected total energy
-85.4944
eV
Raw total energy
-85.4944
eV

Electronic Structure

Indirect band gap
1.2623
eV
Direct band gap
1.4886
eV
DOS at Fermi level
-0.0039
Total magnetisation
0.0000
μB

Additional Information

Prototype ID

AB2C4D4_82_spg1

Decomposition

Na4Ca2HfSb4

Computed at

2024-12-28 05:17:53

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: agm020013865).

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 agm020013865
data_agm020013865
_cell_length_a     10.21134
_cell_length_b     10.21134
_cell_length_c     7.86729
_cell_angle_alpha  88.62789
_cell_angle_beta   91.37211
_cell_angle_gamma  59.85802
_cell_volume       708.59363
_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
  Na1 Na 0.52648 0.93799 0.37746 1.00000
  Na2 Na 0.06201 0.47352 0.87746 1.00000
  Na3 Na 0.13958 0.71334 0.18690 1.00000
  Na4 Na 0.71745 0.13298 0.24658 1.00000
  Na5 Na 0.14968 0.14133 0.21465 1.00000
  Na6 Na 0.86702 0.28255 0.74658 1.00000
  Na7 Na 0.28666 0.86042 0.68690 1.00000
  Na8 Na 0.85867 0.85032 0.71465 1.00000
  Ca1 Ca 0.94236 0.52837 0.38934 1.00000
  Ca2 Ca 0.52112 0.52779 0.37977 1.00000
  Ca3 Ca 0.47163 0.05764 0.88934 1.00000
  Ca4 Ca 0.47221 0.47888 0.87977 1.00000
  Hf1 Hf 0.33603 0.33167 0.50180 1.00000
  Hf2 Hf 0.66833 0.66397 0.00180 1.00000
  Sb1 Sb 0.80640 0.36926 0.13657 1.00000
  Sb2 Sb 0.36678 0.81400 0.09039 1.00000
  Sb3 Sb 0.80682 0.82061 0.11171 1.00000
  Sb4 Sb 0.18600 0.63322 0.59039 1.00000
  Sb5 Sb 0.63074 0.19360 0.63657 1.00000
  Sb6 Sb 0.17939 0.19318 0.61171 1.00000
  Sb7 Sb 0.34430 0.33378 0.14738 1.00000
  Sb8 Sb 0.66622 0.65570 0.64738 1.00000
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