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KTc2Ge9

Alexandria ALEX

Alex-ID: agm101979477 · Space group: P6/mmm (#191)

Alexandria Database API

Basic Information

Formula
KTc2Ge9
Alex-ID
agm101979477
Elements
3
Sites
12
Space group
P6/mmm (#191)
Crystal system
hexagonal
Volume
253.04
ų
Cell a
8.2867
Å
Cell b
8.2867
Å
Cell c
4.2549
Å
α angle
90.00
°
β angle
90.00
°
γ angle
120.00
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
KTc2Ge9
K
1.00 · 8.3%
Tc
2.00 · 16.7%
Ge
9.00 · 75.0%

Energy & Stability

Energy above hull
0.1308
eV/atom
Formation energy
-0.0040
eV/atom
Corrected total energy
-63.4386
eV
Raw total energy
-63.4386
eV

Electronic Structure

Indirect band gap
0.0000
eV
Direct band gap
0.0000
eV
DOS at Fermi level
6.2007
Total magnetisation
0.0000
μB

Additional Information

Prototype ID

AB2C9_94_spg191

Decomposition

K3Ge17 TcGe2 KGe

Computed at

2025-05-19 20:40:13

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: agm101979477).

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 agm101979477
data_agm101979477
_cell_length_a     8.28670
_cell_length_b     8.28670
_cell_length_c     4.25491
_cell_angle_alpha  90.00000
_cell_angle_beta   90.00000
_cell_angle_gamma  120.00000
_cell_volume       253.03720
_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 0.00000 0.00000 0.00000 1.00000
  Tc1 Tc 0.33333 0.66667 0.00000 1.00000
  Tc2 Tc 0.66667 0.33333 0.00000 1.00000
  Ge1 Ge 0.57742 0.78871 0.50000 1.00000
  Ge2 Ge 0.50000 0.50000 0.00000 1.00000
  Ge3 Ge 0.00000 0.50000 0.00000 1.00000
  Ge4 Ge 0.21129 0.42258 0.50000 1.00000
  Ge5 Ge 0.42258 0.21129 0.50000 1.00000
  Ge6 Ge 0.78871 0.21129 0.50000 1.00000
  Ge7 Ge 0.78871 0.57742 0.50000 1.00000
  Ge8 Ge 0.50000 0.00000 0.00000 1.00000
  Ge9 Ge 0.21129 0.78871 0.50000 1.00000
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