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KCa2Mg2Sb3

Alexandria ALEX

Alex-ID: agm019694450 · Space group: Pnma (#62)

Basic Information

Formula
KCa2Mg2Sb3
Alex-ID
agm019694450
Elements
4
Sites
32
Space group
Pnma (#62)
Crystal system
orthorhombic
Volume
962.77
ų
Cell a
4.8423
Å
Cell b
12.3434
Å
Cell c
16.1077
Å
α angle
90.00
°
β angle
90.00
°
γ angle
90.00
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
KCa2Mg2Sb3
K
4.00 · 12.5%
Ca
8.00 · 25.0%
Mg
8.00 · 25.0%
Sb
12.00 · 37.5%

Energy & Stability

Energy above hull
0.0151
eV/atom
Formation energy
-0.7602
eV/atom
Corrected total energy
-106.9755
eV
Raw total energy
-106.9755
eV

Electronic Structure

Indirect band gap
0.4805
eV
Direct band gap
0.4805
eV
DOS at Fermi level
-0.0862
Total magnetisation
0.0000
μB

Additional Information

Prototype ID

AB2C2D3_26_spg62

Decomposition

Ca2MgSb2 KMgSb

Computed at

2024-12-28 04:30:55

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: agm019694450).

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 agm019694450
data_agm019694450
_cell_length_a     4.84234
_cell_length_b     12.34338
_cell_length_c     16.10771
_cell_angle_alpha  90.00000
_cell_angle_beta   90.00000
_cell_angle_gamma  90.00000
_cell_volume       962.77215
_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
  K1 K 0.75000 0.41258 0.95480 1.00000
  K2 K 0.75000 0.91258 0.54520 1.00000
  K3 K 0.25000 0.58742 0.04520 1.00000
  K4 K 0.25000 0.08742 0.45480 1.00000
  Ca1 Ca 0.75000 0.10215 0.07749 1.00000
  Ca2 Ca 0.75000 0.60215 0.42251 1.00000
  Ca3 Ca 0.25000 0.89785 0.92251 1.00000
  Ca4 Ca 0.25000 0.39785 0.57749 1.00000
  Ca5 Ca 0.75000 0.36357 0.21799 1.00000
  Ca6 Ca 0.75000 0.86357 0.28201 1.00000
  Ca7 Ca 0.25000 0.63643 0.78201 1.00000
  Ca8 Ca 0.25000 0.13643 0.71799 1.00000
  Mg1 Mg 0.75000 0.29923 0.42425 1.00000
  Mg2 Mg 0.75000 0.79923 0.07575 1.00000
  Mg3 Mg 0.25000 0.70077 0.57575 1.00000
  Mg4 Mg 0.25000 0.20077 0.92425 1.00000
  Mg5 Mg 0.75000 0.37525 0.71979 1.00000
  Mg6 Mg 0.75000 0.87525 0.78021 1.00000
  Mg7 Mg 0.25000 0.62475 0.28021 1.00000
  Mg8 Mg 0.25000 0.12475 0.21979 1.00000
  Sb1 Sb 0.75000 0.08031 0.87671 1.00000
  Sb2 Sb 0.75000 0.58031 0.62329 1.00000
  Sb3 Sb 0.25000 0.91969 0.12329 1.00000
  Sb4 Sb 0.25000 0.41969 0.37671 1.00000
  Sb5 Sb 0.75000 0.12126 0.30512 1.00000
  Sb6 Sb 0.75000 0.62126 0.19488 1.00000
  Sb7 Sb 0.25000 0.87874 0.69488 1.00000
  Sb8 Sb 0.25000 0.37874 0.80512 1.00000
  Sb9 Sb 0.75000 0.71147 0.90995 1.00000
  Sb10 Sb 0.75000 0.21147 0.59005 1.00000
  Sb11 Sb 0.25000 0.28853 0.09005 1.00000
  Sb12 Sb 0.25000 0.78853 0.40995 1.00000
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