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Ca5Hf2N6

Alexandria ALEX

Alex-ID: agm005252880 · Space group: C2/c (#15)

Basic Information

Formula
Ca5Hf2N6
Alex-ID
agm005252880
Elements
3
Sites
26
Space group
C2/c (#15)
Crystal system
monoclinic
Volume
489.62
ų
Cell a
6.2812
Å
Cell b
6.2812
Å
Cell c
14.6434
Å
α angle
87.66
°
β angle
87.66
°
γ angle
58.04
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
Ca5Hf2N6
Ca
10.00 · 38.5%
Hf
4.00 · 15.4%
N
12.00 · 46.2%

Energy & Stability

Energy above hull
0.2175
eV/atom
Formation energy
-1.2582
eV/atom
Corrected total energy
-187.9770
eV
Raw total energy
-187.9770
eV

Electronic Structure

Indirect band gap
1.3366
eV
Direct band gap
1.4400
eV
DOS at Fermi level
-0.0009
Total magnetisation
0.0000
μB

Additional Information

Prototype ID

A2B5C6_33_spg15

Decomposition

Ca4HfN4 CaHfN2

Computed at

2023-05-10 15:31:12.967658

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: agm005252880).

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 agm005252880
data_agm005252880
_cell_length_a     6.28118
_cell_length_b     6.28118
_cell_length_c     14.64340
_cell_angle_alpha  87.65726
_cell_angle_beta   87.65726
_cell_angle_gamma  58.03909
_cell_volume       489.61568
_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
  Ca1 Ca 0.58971 0.41029 0.25000 1.00000
  Ca2 Ca 0.41029 0.58971 0.75000 1.00000
  Ca3 Ca 0.16146 0.62669 0.53938 1.00000
  Ca4 Ca 0.37331 0.83854 0.96062 1.00000
  Ca5 Ca 0.83854 0.37331 0.46062 1.00000
  Ca6 Ca 0.62669 0.16146 0.03938 1.00000
  Ca7 Ca 0.90918 0.79815 0.21730 1.00000
  Ca8 Ca 0.20185 0.09082 0.28270 1.00000
  Ca9 Ca 0.09082 0.20185 0.78270 1.00000
  Ca10 Ca 0.79815 0.90918 0.71730 1.00000
  Hf1 Hf 0.04097 0.36386 0.08749 1.00000
  Hf2 Hf 0.63614 0.95903 0.41251 1.00000
  Hf3 Hf 0.95903 0.63614 0.91251 1.00000
  Hf4 Hf 0.36386 0.04097 0.58749 1.00000
  N1 N 0.26814 0.37676 0.17958 1.00000
  N2 N 0.62324 0.73186 0.32042 1.00000
  N3 N 0.73186 0.62324 0.82042 1.00000
  N4 N 0.37676 0.26814 0.67958 1.00000
  N5 N 0.77059 0.72767 0.04047 1.00000
  N6 N 0.27233 0.22941 0.45953 1.00000
  N7 N 0.22941 0.27233 0.95953 1.00000
  N8 N 0.72767 0.77059 0.54047 1.00000
  N9 N 0.91782 0.14438 0.14256 1.00000
  N10 N 0.85562 0.08218 0.35744 1.00000
  N11 N 0.08218 0.85562 0.85744 1.00000
  N12 N 0.14438 0.91782 0.64256 1.00000
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