KNa2Al3(SiO4)3
Alexandria ALEXAlex-ID: agm010812428 · Space group: P2_1/c (#14)
Basic Information
Formula
KNa2Al3(SiO4)3
Alex-ID
agm010812428
Elements
5
Sites
84
Space group
P2_1/c (#14)
Crystal system
monoclinic
Volume
1,129.73
ų
Cell a
8.8140
Å
Cell b
8.3299
Å
Cell c
17.7385
Å
α angle
90.00
°
β angle
119.84
°
γ angle
90.00
°
Composition
Element Composition (atomic fraction)
Composition Info
Formula
KNa2Al3(SiO4)3
K
4.00 · 4.8%
Na
8.00 · 9.5%
Al
12.00 · 14.3%
Si
12.00 · 14.3%
O
48.00 · 57.1%
Energy & Stability
Energy above hull
0.0022
eV/atom
Formation energy
-3.1643
eV/atom
Corrected total energy
-628.7805
eV
Raw total energy
-595.0706
eV
Electronic Structure
Indirect band gap
4.7190
eV
Direct band gap
4.7218
eV
DOS at Fermi level
0.0000
Total magnetisation
0.0006
μB
Additional Information
Prototype ID
AB2C3D3E12_6_spg14
Decomposition
NaAlSiO4 KAlSiO4
Computed at
2025-01-26 22:03:38
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: agm010812428).
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
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Raw CIF Data
# CIF generated by HEAS from Alexandria entry agm010812428
data_agm010812428
_cell_length_a 8.81401
_cell_length_b 8.32993
_cell_length_c 17.73854
_cell_angle_alpha 90.00000
_cell_angle_beta 119.83646
_cell_angle_gamma 90.00000
_cell_volume 1129.73425
_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 0.49834 0.50399 0.25021 1.00000
K2 K 0.50166 0.49601 0.74979 1.00000
K3 K 0.50166 0.00399 0.24979 1.00000
K4 K 0.49834 0.99601 0.75021 1.00000
Na1 Na 0.16077 0.52604 0.43725 1.00000
Na2 Na 0.83923 0.47396 0.56275 1.00000
Na3 Na 0.83923 0.02604 0.06275 1.00000
Na4 Na 0.16077 0.97396 0.93725 1.00000
Na5 Na 0.18727 0.97146 0.41173 1.00000
Na6 Na 0.81273 0.02854 0.58827 1.00000
Na7 Na 0.81273 0.47146 0.08827 1.00000
Na8 Na 0.18727 0.52854 0.91173 1.00000
Al1 Al 0.52885 0.78730 0.09205 1.00000
Al2 Al 0.47115 0.21270 0.90795 1.00000
Al3 Al 0.47115 0.28730 0.40795 1.00000
Al4 Al 0.52885 0.71270 0.59205 1.00000
Al5 Al 0.84535 0.28827 0.26380 1.00000
Al6 Al 0.15465 0.71173 0.73620 1.00000
Al7 Al 0.15465 0.78827 0.23620 1.00000
Al8 Al 0.84535 0.21173 0.76380 1.00000
Al9 Al 0.81653 0.78957 0.42286 1.00000
Al10 Al 0.18347 0.21043 0.57714 1.00000
Al11 Al 0.18347 0.28957 0.07714 1.00000
Al12 Al 0.81653 0.71043 0.92286 1.00000
Si1 Si 0.17853 0.67310 0.07793 1.00000
Si2 Si 0.82147 0.32690 0.92207 1.00000
Si3 Si 0.82147 0.17310 0.42207 1.00000
Si4 Si 0.17853 0.82690 0.57793 1.00000
Si5 Si 0.84641 0.67211 0.26411 1.00000
Si6 Si 0.15359 0.32789 0.73589 1.00000
Si7 Si 0.15359 0.17211 0.23589 1.00000
Si8 Si 0.84641 0.82789 0.76411 1.00000
Si9 Si 0.52801 0.17242 0.08945 1.00000
Si10 Si 0.47199 0.82758 0.91055 1.00000
Si11 Si 0.47199 0.67242 0.41055 1.00000
Si12 Si 0.52801 0.32758 0.58945 1.00000
O1 O 0.62342 0.26741 0.18271 1.00000
O2 O 0.37658 0.73259 0.81729 1.00000
O3 O 0.37658 0.76741 0.31729 1.00000
O4 O 0.62342 0.23259 0.68271 1.00000
O5 O 0.21269 0.48989 0.05492 1.00000
O6 O 0.78731 0.51011 0.94508 1.00000
O7 O 0.78731 0.98989 0.44508 1.00000
O8 O 0.21269 0.01011 0.55492 1.00000
O9 O 0.68462 0.66666 0.44828 1.00000
O10 O 0.31538 0.33334 0.55172 1.00000
O11 O 0.31538 0.16666 0.05172 1.00000
O12 O 0.68462 0.83334 0.94828 1.00000
O13 O 0.88568 0.48788 0.30262 1.00000
O14 O 0.11432 0.51212 0.69738 1.00000
O15 O 0.11432 0.98788 0.19738 1.00000
O16 O 0.88568 0.01212 0.80262 1.00000
O17 O 0.03390 0.75482 0.28937 1.00000
O18 O 0.96610 0.24518 0.71063 1.00000
O19 O 0.96610 0.25482 0.21063 1.00000
O20 O 0.03390 0.74518 0.78937 1.00000
O21 O 0.60364 0.98772 0.10538 1.00000
O22 O 0.39636 0.01228 0.89462 1.00000
O23 O 0.39636 0.48772 0.39462 1.00000
O24 O 0.60364 0.51228 0.60538 1.00000
O25 O 0.10260 0.66456 0.14582 1.00000
O26 O 0.89740 0.33544 0.85418 1.00000
O27 O 0.89740 0.16456 0.35418 1.00000
O28 O 0.10260 0.83544 0.64582 1.00000
O29 O 0.36667 0.76798 0.12255 1.00000
O30 O 0.63333 0.23202 0.87745 1.00000
O31 O 0.63333 0.26798 0.37745 1.00000
O32 O 0.36667 0.73202 0.62255 1.00000
O33 O 0.42729 0.76197 0.48001 1.00000
O34 O 0.57271 0.23803 0.51999 1.00000
O35 O 0.57271 0.26197 0.01999 1.00000
O36 O 0.42729 0.73803 0.98001 1.00000
O37 O 0.71259 0.66562 0.15844 1.00000
O38 O 0.28741 0.33438 0.84156 1.00000
O39 O 0.28741 0.16562 0.34156 1.00000
O40 O 0.71259 0.83438 0.65844 1.00000
O41 O 0.03958 0.73526 0.48709 1.00000
O42 O 0.96042 0.26474 0.51291 1.00000
O43 O 0.96042 0.23526 0.01291 1.00000
O44 O 0.03958 0.76474 0.98709 1.00000
O45 O 0.75477 0.76683 0.31209 1.00000
O46 O 0.24523 0.23317 0.68791 1.00000
O47 O 0.24523 0.26683 0.18791 1.00000
O48 O 0.75477 0.73317 0.81209 1.00000
