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Ca3Mg5(As2O7)4

Alexandria ALEX

Alex-ID: agm017453534 · Space group: P1 (#1)

Basic Information

Formula
Ca3Mg5(As2O7)4
Alex-ID
agm017453534
Elements
4
Sites
44
Space group
P1 (#1)
Crystal system
triclinic
Volume
571.44
ų
Cell a
6.8154
Å
Cell b
6.8655
Å
Cell c
13.4237
Å
α angle
80.52
°
β angle
79.40
°
γ angle
68.57
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
Ca3Mg5(As2O7)4
Ca
3.00 · 6.8%
Mg
5.00 · 11.4%
As
8.00 · 18.2%
O
28.00 · 63.6%

Energy & Stability

Energy above hull
0.0323
eV/atom
Formation energy
-2.3599
eV/atom
Corrected total energy
-293.8424
eV
Raw total energy
-274.1783
eV

Electronic Structure

Indirect band gap
2.9419
eV
Direct band gap
2.9458
eV
DOS at Fermi level
0.0000
Total magnetisation
0.0000
μB

Additional Information

Prototype ID

A3B5C8D28_1_spg1

Decomposition

Ca19Mg2(AsO4)14 Ca(AsO3)2 Mg3(AsO4)2

Computed at

2024-11-06 17:41:28.650369

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: agm017453534).

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 agm017453534
data_agm017453534
_cell_length_a     6.81540
_cell_length_b     6.86548
_cell_length_c     13.42367
_cell_angle_alpha  80.51891
_cell_angle_beta   79.40406
_cell_angle_gamma  68.56936
_cell_volume       571.43508
_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
  Ca1 Ca 0.79010 0.77022 0.21869 1.00000
  Ca2 Ca 0.20169 0.23842 0.78021 1.00000
  Ca3 Ca 0.21740 0.22388 0.28216 1.00000
  Mg1 Mg 0.59732 0.27612 0.57263 1.00000
  Mg2 Mg 0.59753 0.27830 0.06847 1.00000
  Mg3 Mg 0.40794 0.72418 0.92827 1.00000
  Mg4 Mg 0.40734 0.71507 0.43212 1.00000
  Mg5 Mg 0.77387 0.74041 0.72396 1.00000
  As1 As 0.14349 0.16927 0.54567 1.00000
  As2 As 0.14095 0.16530 0.04677 1.00000
  As3 As 0.86296 0.84291 0.94433 1.00000
  As4 As 0.86154 0.82272 0.46260 1.00000
  As5 As 0.28961 0.72713 0.68419 1.00000
  As6 As 0.30221 0.72302 0.18551 1.00000
  As7 As 0.69306 0.28770 0.81265 1.00000
  As8 As 0.70456 0.26770 0.31778 1.00000
  O1 O 0.42992 0.78628 0.76302 1.00000
  O2 O 0.42288 0.80163 0.26558 1.00000
  O3 O 0.56341 0.21593 0.73565 1.00000
  O4 O 0.58942 0.18677 0.23553 1.00000
  O5 O 0.28135 0.04846 0.94016 1.00000
  O6 O 0.28683 0.04392 0.44178 1.00000
  O7 O 0.73297 0.92255 0.57659 1.00000
  O8 O 0.72150 0.95025 0.05329 1.00000
  O9 O 0.89202 0.31791 0.52836 1.00000
  O10 O 0.89151 0.32051 0.03089 1.00000
  O11 O 0.11175 0.68626 0.96010 1.00000
  O12 O 0.11556 0.67210 0.46947 1.00000
  O13 O 0.09952 0.97177 0.64522 1.00000
  O14 O 0.09683 0.95670 0.14362 1.00000
  O15 O 0.90385 0.06133 0.85475 1.00000
  O16 O 0.90107 0.03852 0.36836 1.00000
  O17 O 0.29166 0.25786 0.60353 1.00000
  O18 O 0.29163 0.24990 0.10519 1.00000
  O19 O 0.71299 0.76560 0.88040 1.00000
  O20 O 0.71108 0.74730 0.39939 1.00000
  O21 O 0.11324 0.60999 0.74397 1.00000
  O22 O 0.14834 0.58636 0.24965 1.00000
  O23 O 0.84535 0.42419 0.74467 1.00000
  O24 O 0.85936 0.40355 0.25309 1.00000
  O25 O 0.46018 0.61109 0.58403 1.00000
  O26 O 0.47013 0.61400 0.08282 1.00000
  O27 O 0.53288 0.39471 0.91721 1.00000
  O28 O 0.53119 0.38224 0.41766 1.00000
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