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Ac2Ta2O7

Alexandria ALEX

Alex-ID: agm005572007 · Space group: Fd-3m (#227)

Alexandria Database API

Basic Information

Formula
Ac2Ta2O7
Alex-ID
agm005572007
Elements
3
Sites
22
Space group
Fd-3m (#227)
Crystal system
cubic
Volume
325.85
ų
Cell a
7.7240
Å
Cell b
7.7240
Å
Cell c
7.7240
Å
α angle
60.00
°
β angle
60.00
°
γ angle
60.00
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
Ac2Ta2O7
Ac
4.00 · 18.2%
Ta
4.00 · 18.2%
O
14.00 · 63.6%

Energy & Stability

Energy above hull
0.2009
eV/atom
Formation energy
-3.3800
eV/atom
Corrected total energy
-207.6199
eV
Raw total energy
-197.7878
eV

Electronic Structure

Indirect band gap
0.0000
eV
Direct band gap
0.0000
eV
DOS at Fermi level
15.2073
Total magnetisation
4.0271
μB

Additional Information

Prototype ID

A2B2C7_0_spg227

Decomposition

Ac3TaO7 AcTaO4 Ta

Computed at

2023-06-04 21:59:04.192002

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: agm005572007).

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 agm005572007
data_agm005572007
_cell_length_a     7.72404
_cell_length_b     7.72404
_cell_length_c     7.72404
_cell_angle_alpha  60.00000
_cell_angle_beta   60.00000
_cell_angle_gamma  59.99999
_cell_volume       325.85093
_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
  Ac1 Ac 0.62500 0.62500 0.62500 1.00000
  Ac2 Ac 0.62500 0.62500 0.12500 1.00000
  Ac3 Ac 0.62500 0.12500 0.62500 1.00000
  Ac4 Ac 0.12500 0.62500 0.62500 1.00000
  Ta1 Ta 0.62500 0.12500 0.12500 1.00000
  Ta2 Ta 0.12500 0.62500 0.12500 1.00000
  Ta3 Ta 0.12500 0.12500 0.62500 1.00000
  Ta4 Ta 0.12500 0.12500 0.12500 1.00000
  O1 O 0.19781 0.19781 0.80219 1.00000
  O2 O 0.19781 0.80219 0.19781 1.00000
  O3 O 0.44781 0.05219 0.44781 1.00000
  O4 O 0.44781 0.44781 0.05219 1.00000
  O5 O 0.75000 0.75000 0.75000 1.00000
  O6 O 0.80219 0.19781 0.19781 1.00000
  O7 O 0.44781 0.05219 0.05219 1.00000
  O8 O 0.05219 0.44781 0.44781 1.00000
  O9 O 0.05219 0.05219 0.44781 1.00000
  O10 O 0.05219 0.44781 0.05219 1.00000
  O11 O 0.19781 0.80219 0.80219 1.00000
  O12 O 0.50000 0.50000 0.50000 1.00000
  O13 O 0.80219 0.19781 0.80219 1.00000
  O14 O 0.80219 0.80219 0.19781 1.00000
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