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K2MgI2

Alexandria ALEX

Alex-ID: agm002995201 · Space group: P4/mbm (#127)

Basic Information

Formula
K2MgI2
Alex-ID
agm002995201
Elements
3
Sites
10
Space group
P4/mbm (#127)
Crystal system
tetragonal
Volume
432.11
ų
Cell a
9.8787
Å
Cell b
9.8787
Å
Cell c
4.4279
Å
α angle
90.00
°
β angle
90.00
°
γ angle
90.00
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
K2MgI2
I
4.00 · 40.0%
K
4.00 · 40.0%
Mg
2.00 · 20.0%

Energy & Stability

Energy above hull
0.3156
eV/atom
Formation energy
-0.8703
eV/atom
Corrected total energy
-22.5012
eV
Raw total energy
-22.5012
eV

Electronic Structure

Indirect band gap
0.0122
eV
Direct band gap
0.1034
eV
DOS at Fermi level
0.3849
Total magnetisation
0.0000
μB

Additional Information

Prototype ID

AB2C2_3_spg127

Decomposition

Mg KI

Computed at

2016-12-04 09:13:52

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: agm002995201).

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 agm002995201
data_agm002995201
_cell_length_a     9.87865
_cell_length_b     9.87865
_cell_length_c     4.42792
_cell_angle_alpha  90.00000
_cell_angle_beta   90.00000
_cell_angle_gamma  90.00000
_cell_volume       432.11064
_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
  I1 I 0.34954 0.84954 0.00000 1.00000
  I2 I 0.84954 0.65046 0.00000 1.00000
  I3 I 0.65046 0.15046 0.00000 1.00000
  I4 I 0.15046 0.34954 0.00000 1.00000
  K1 K 0.15057 0.65057 0.50000 1.00000
  K2 K 0.65057 0.84943 0.50000 1.00000
  K3 K 0.84943 0.34943 0.50000 1.00000
  K4 K 0.34943 0.15057 0.50000 1.00000
  Mg1 Mg 0.00000 0.00000 0.00000 1.00000
  Mg2 Mg 0.50000 0.50000 0.00000 1.00000
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