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KBa2Ho2AlFe2Ge8HO27

Alexandria ALEX

Alex-ID: agm006902602 · Space group: C2 (#5)

Basic Information

Formula
KBa2Ho2AlFe2Ge8HO27
Alex-ID
agm006902602
Elements
8
Sites
44
Space group
C2 (#5)
Crystal system
monoclinic
Volume
629.15
ų
Cell a
7.4989
Å
Cell b
7.4989
Å
Cell c
12.0537
Å
α angle
74.46
°
β angle
74.46
°
γ angle
85.65
°

Composition

Element Composition (atomic fraction)
Composition Info
Formula
KBa2Ho2AlFe2Ge8HO27
K
1.00 · 2.3%
Ba
2.00 · 4.5%
Ho
2.00 · 4.5%
Al
1.00 · 2.3%
Fe
2.00 · 4.5%
Ge
8.00 · 18.2%
H
1.00 · 2.3%
O
27.00 · 61.4%

Energy & Stability

Energy above hull
0.0698
eV/atom
Formation energy
-2.4512
eV/atom
Corrected total energy
-316.6802
eV
Raw total energy
-292.2524
eV

Electronic Structure

Indirect band gap
0.0256
eV
Direct band gap
0.0390
eV
DOS at Fermi level
9.1507
Total magnetisation
10.2649
μB

Additional Information

Prototype ID

ABCD2E2F2G8H27_1_spg5

Decomposition

KFeGeO4 KBaFeGe2O7 FeHO2 KO12 BaAl2(GeO4)2 Fe2O3 BaGe4O9 BaHo4Ge5O17

Computed at

2024-06-24 12:08:58.796650

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: agm006902602).

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 agm006902602
data_agm006902602
_cell_length_a     7.49891
_cell_length_b     7.49891
_cell_length_c     12.05370
_cell_angle_alpha  74.45710
_cell_angle_beta   74.45710
_cell_angle_gamma  85.65321
_cell_volume       629.14787
_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 0.98597 0.01403 0.00000 1.00000
  Ba1 Ba 0.68771 0.77131 0.49611 1.00000
  Ba2 Ba 0.22869 0.31229 0.50389 1.00000
  Ho1 Ho 0.52320 0.17993 0.95566 1.00000
  Ho2 Ho 0.82007 0.47680 0.04434 1.00000
  Al1 Al 0.32203 0.67797 0.00000 1.00000
  Fe1 Fe 0.64078 0.25345 0.63716 1.00000
  Fe2 Fe 0.74655 0.35922 0.36284 1.00000
  Ge1 Ge 0.85738 0.88387 0.79363 1.00000
  Ge2 Ge 0.11613 0.14262 0.20637 1.00000
  Ge3 Ge 0.89245 0.48427 0.74150 1.00000
  Ge4 Ge 0.51573 0.10755 0.25850 1.00000
  Ge5 Ge 0.31312 0.92408 0.74395 1.00000
  Ge6 Ge 0.07592 0.68688 0.25605 1.00000
  Ge7 Ge 0.49266 0.71307 0.21369 1.00000
  Ge8 Ge 0.28693 0.50734 0.78631 1.00000
  H1 H 0.93242 0.06758 0.50000 1.00000
  O1 O 0.44742 0.09357 0.63246 1.00000
  O2 O 0.90643 0.55258 0.36754 1.00000
  O3 O 0.70236 0.07071 0.78400 1.00000
  O4 O 0.92929 0.29764 0.21600 1.00000
  O5 O 0.83730 0.16270 0.50000 1.00000
  O6 O 0.83943 0.73118 0.70489 1.00000
  O7 O 0.26882 0.16057 0.29511 1.00000
  O8 O 0.17128 0.55183 0.92243 1.00000
  O9 O 0.44817 0.82872 0.07757 1.00000
  O10 O 0.50064 0.49936 0.00000 1.00000
  O11 O 0.08368 0.99112 0.72607 1.00000
  O12 O 0.00888 0.91632 0.27393 1.00000
  O13 O 0.38914 0.72232 0.68966 1.00000
  O14 O 0.27768 0.61086 0.31034 1.00000
  O15 O 0.57115 0.16467 0.37505 1.00000
  O16 O 0.83533 0.42885 0.62495 1.00000
  O17 O 0.54437 0.85947 0.29645 1.00000
  O18 O 0.14053 0.45563 0.70355 1.00000
  O19 O 0.83137 0.76291 0.94090 1.00000
  O20 O 0.23709 0.16863 0.05910 1.00000
  O21 O 0.57166 0.42834 0.50000 1.00000
  O22 O 0.81596 0.35585 0.88975 1.00000
  O23 O 0.64415 0.18404 0.11025 1.00000
  O24 O 0.46340 0.34122 0.78381 1.00000
  O25 O 0.65878 0.53660 0.21619 1.00000
  O26 O 0.32980 0.89584 0.88880 1.00000
  O27 O 0.10416 0.67020 0.11120 1.00000
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