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K3CaTa2Nb2O12

Alexandria ALEX

Alex-ID: agm010842846 · Space group: Pmc2_1 (#26)

Basic Information

Formula
K3CaTa2Nb2O12
Alex-ID
agm010842846
Elements
5
Sites
40
Space group
Pmc2_1 (#26)
Crystal system
orthorhombic
Volume
524.10
ų
Cell a
5.6909
Å
Cell b
5.7052
Å
Cell c
16.1420
Å
α angle
90.00
°
β angle
90.00
°
γ angle
90.00
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
K3CaTa2Nb2O12
K
6.00 · 15.0%
Ca
2.00 · 5.0%
Ta
4.00 · 10.0%
Nb
4.00 · 10.0%
O
24.00 · 60.0%

Energy & Stability

Energy above hull
0.0087
eV/atom
Formation energy
-3.0580
eV/atom
Corrected total energy
-339.6256
eV
Raw total energy
-322.7707
eV

Electronic Structure

Indirect band gap
0.0000
eV
Direct band gap
0.0003
eV
DOS at Fermi level
8.1381
Total magnetisation
0.0027
μB

Additional Information

Prototype ID

AB2C2D3E12_38_spg26

Decomposition

Ca2Nb2O7 K3CaNb4O12 KTaO3 CaNb2O4 K3NbO4

Computed at

2024-09-05 08:10:33.621920

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: agm010842846).

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 agm010842846
data_agm010842846
_cell_length_a     5.69090
_cell_length_b     5.70523
_cell_length_c     16.14204
_cell_angle_alpha  90.00000
_cell_angle_beta   90.00000
_cell_angle_gamma  90.00000
_cell_volume       524.09717
_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 0.25053 0.99644 0.25217 1.00000
  K2 K 0.25053 0.99644 0.74783 1.00000
  K3 K 0.74947 0.49644 0.74783 1.00000
  K4 K 0.74947 0.49644 0.25217 1.00000
  K5 K 0.74953 0.49776 0.50000 1.00000
  K6 K 0.25047 0.99776 0.50000 1.00000
  Ca1 Ca 0.74771 0.53756 0.00000 1.00000
  Ca2 Ca 0.25229 0.03756 0.00000 1.00000
  Ta1 Ta 0.24926 0.49734 0.37578 1.00000
  Ta2 Ta 0.24926 0.49734 0.62422 1.00000
  Ta3 Ta 0.75074 0.99734 0.62422 1.00000
  Ta4 Ta 0.75074 0.99734 0.37578 1.00000
  Nb1 Nb 0.25307 0.50315 0.87476 1.00000
  Nb2 Nb 0.25307 0.50315 0.12524 1.00000
  Nb3 Nb 0.74693 0.00315 0.12524 1.00000
  Nb4 Nb 0.74693 0.00315 0.87476 1.00000
  O1 O 0.30039 0.48430 0.00000 1.00000
  O2 O 0.25472 0.49893 0.50000 1.00000
  O3 O 0.49969 0.24837 0.37257 1.00000
  O4 O 0.46889 0.21843 0.12556 1.00000
  O5 O 0.49969 0.24837 0.62743 1.00000
  O6 O 0.46889 0.21843 0.87444 1.00000
  O7 O 0.53111 0.71843 0.12556 1.00000
  O8 O 0.50031 0.74837 0.37257 1.00000
  O9 O 0.50031 0.74837 0.62743 1.00000
  O10 O 0.53111 0.71843 0.87444 1.00000
  O11 O 0.69961 0.98430 0.00000 1.00000
  O12 O 0.74528 0.99893 0.50000 1.00000
  O13 O 0.76474 0.00031 0.75161 1.00000
  O14 O 0.76474 0.00031 0.24839 1.00000
  O15 O 0.97039 0.27855 0.89303 1.00000
  O16 O 0.97039 0.27855 0.10697 1.00000
  O17 O 0.00014 0.24842 0.62384 1.00000
  O18 O 0.00014 0.24842 0.37616 1.00000
  O19 O 0.02961 0.77855 0.89303 1.00000
  O20 O 0.02961 0.77855 0.10697 1.00000
  O21 O 0.99986 0.74842 0.37616 1.00000
  O22 O 0.99986 0.74842 0.62384 1.00000
  O23 O 0.23526 0.50031 0.24839 1.00000
  O24 O 0.23526 0.50031 0.75161 1.00000
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