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Ho2Mg(GeO3)4

Alexandria ALEX

Alex-ID: agm020176809 · Space group: Cmme (#67)

Basic Information

Formula
Ho2Mg(GeO3)4
Alex-ID
agm020176809
Elements
4
Sites
38
Space group
Cmme (#67)
Crystal system
orthorhombic
Volume
491.17
ų
Cell a
9.9424
Å
Cell b
9.9424
Å
Cell c
4.9692
Å
α angle
90.00
°
β angle
90.00
°
γ angle
90.73
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
Ho2Mg(GeO3)4
Ho
4.00 · 10.5%
Mg
2.00 · 5.3%
Ge
8.00 · 21.1%
O
24.00 · 63.2%

Energy & Stability

Energy above hull
0.0001
eV/atom
Formation energy
-2.7827
eV/atom
Corrected total energy
-283.1826
eV
Raw total energy
-266.3276
eV

Electronic Structure

Indirect band gap
3.0617
eV
Direct band gap
3.0786
eV
DOS at Fermi level
0.0000
Total magnetisation
0.0000
μB

Additional Information

Prototype ID

AB2C4D12_1_spg67

Decomposition

MgGeO3 Ho2Ge2O7 GeO2

Computed at

2025-01-26 20:56:48

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: agm020176809).

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 agm020176809
data_agm020176809
_cell_length_a     9.94236
_cell_length_b     9.94236
_cell_length_c     4.96919
_cell_angle_alpha  90.00000
_cell_angle_beta   90.00000
_cell_angle_gamma  90.73311
_cell_volume       491.16620
_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
  Ho1 Ho 0.50000 0.00000 0.50000 1.00000
  Ho2 Ho 0.00000 0.50000 0.50000 1.00000
  Ho3 Ho 0.25000 0.25000 0.50000 1.00000
  Ho4 Ho 0.75000 0.75000 0.50000 1.00000
  Mg1 Mg 0.00000 0.00000 0.50000 1.00000
  Mg2 Mg 0.50000 0.50000 0.50000 1.00000
  Ge1 Ge 0.24527 0.97906 0.99230 1.00000
  Ge2 Ge 0.75473 0.02094 0.00770 1.00000
  Ge3 Ge 0.74527 0.47906 0.00770 1.00000
  Ge4 Ge 0.25473 0.52094 0.99230 1.00000
  Ge5 Ge 0.97906 0.24527 0.00770 1.00000
  Ge6 Ge 0.02094 0.75473 0.99230 1.00000
  Ge7 Ge 0.47906 0.74527 0.99230 1.00000
  Ge8 Ge 0.52094 0.25473 0.00770 1.00000
  O1 O 0.06012 0.16349 0.26890 1.00000
  O2 O 0.56632 0.83034 0.24858 1.00000
  O3 O 0.93368 0.66966 0.24858 1.00000
  O4 O 0.43988 0.33651 0.26890 1.00000
  O5 O 0.93988 0.83651 0.73110 1.00000
  O6 O 0.43368 0.16966 0.75142 1.00000
  O7 O 0.06632 0.33034 0.75142 1.00000
  O8 O 0.56012 0.66349 0.73110 1.00000
  O9 O 0.16349 0.06012 0.73110 1.00000
  O10 O 0.83034 0.56632 0.75142 1.00000
  O11 O 0.66966 0.93368 0.75142 1.00000
  O12 O 0.33651 0.43988 0.73110 1.00000
  O13 O 0.83651 0.93988 0.26890 1.00000
  O14 O 0.16966 0.43368 0.24858 1.00000
  O15 O 0.33034 0.06632 0.24858 1.00000
  O16 O 0.66349 0.56012 0.26890 1.00000
  O17 O 0.86937 0.13063 0.82661 1.00000
  O18 O 0.37328 0.87328 0.82748 1.00000
  O19 O 0.12672 0.62672 0.82748 1.00000
  O20 O 0.63063 0.36937 0.82661 1.00000
  O21 O 0.13063 0.86937 0.17339 1.00000
  O22 O 0.62672 0.12672 0.17252 1.00000
  O23 O 0.87328 0.37328 0.17252 1.00000
  O24 O 0.36937 0.63063 0.17339 1.00000
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