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HEAS Data Platform · Materials Science Database

K2NaTlF6

Elasticity Data ELA

MP-ID: mp-13798 · Space group: Fm-3m (#225)

Basic Information

Formula
K2NaTlF6
MP-ID
mp-13798
Elements
4
Sites
10
Density
3.9645
g/cm³
Volume
175.73
ų
Cell a
6.2872
Å
Cell b
6.2872
Å
Cell c
6.2872
Å
α Angle
60.00
°
β Angle
60.00
°
γ Angle
60.00
°
Space Group
Fm-3m
Point Group
m-3m
Crystal System
Cubic
Bravais Lattice
Cubic F
Stability
Yes
Packing Fraction
0.7400

X-ray Diffraction

Diffraction Pattern
X-axis: 2θ (°); Y-axis: relative intensity; CuKa ; λ=1.5406 Å
Diffraction Peaks (Top 20)
2θd (Å)Ihkl
17.27 5.1335 95.7 (1,1,1)
19.97 4.4457 53.8 (1,1,0)
28.39 3.1436 100.0 (2,1,1)
33.42 2.6809 55.6 (2,2,1)
40.59 2.2229 47.5 (2,2,0)
44.41 2.0398 24.8 (3,2,2)
45.63 1.9882 26.4 (3,2,1)
50.27 1.8150 41.2 (3,3,2)
53.56 1.7112 21.2 (3,3,3)
58.74 1.5718 29.0 (4,2,2)
61.72 1.5029 20.9 (4,3,2)
62.69 1.4819 12.8 (4,3,3)
66.51 1.4059 17.9 (4,3,1)
69.30 1.3559 7.2 (4,4,3)
73.84 1.2834 9.1 (4,4,4)
76.51 1.2451 11.5 (4,4,1)
77.40 1.2330 5.5 (5,3,2)
80.91 1.1882 20.8 (5,2,1)
83.52 1.1576 13.4 (5,4,4)
87.84 1.1114 4.3 (4,4,0)
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Energy Properties

Formation Energy/atom
-2.69313
eV/atom
Energy/atom
-4.43947
eV/atom
Energy above Hull
0.0000
eV/atom
Uncorrected Energy
-4.1623
eV/atom
Volume/atom
17.57
ų
c/a Ratio
-

Electronic Properties

Metallic
Non-metal
Band Gap
3.637
eV
Direct Gap
Yes
CBM
N/A
eV

Magnetic Properties

Magnetic
No
Total Mag. Moment
0.0000
μB
Mag. Ordering
NM
Mag. Sites
0
Magnetization/Volume
0.000000
μB/ų

Elastic Properties

KVRH
37.066
GPa
GVRH
18.040
GPa
Young's Modulus E
46.566
GPa
Poisson Ratio ν
0.291
Pugh Ratio K/G
2.055
Vickers Hardness Est.
1.678
GPa
Ductility
Brittle
Anisotropy
0.526
Lame λ
25.039
GPa

Feature Analysis

Composition Overview

Element Composition (atomic fraction)
Composition Info
Major / Matrix Element
F · 0.600
Element Family
Metalloid-Nonmetal
Solute Fraction
0.400
Interstitial Fraction
0.000

Elasticity Features

Elastic Modulus Comparison (GPa)
Elastic Features
Elastic Anisotropy AU
0.5260
Homogeneous Poisson ν
0.2910
Debye Temperature
334.2
K
Sound Velocity
2,379.9
m/s
Homogeneity
0.2910

Related Tasks

Citation & References

Materials Project Page
https://materialsproject.org/materials/mp-13798
Reference Citation

The crystal structure and related material properties of K2NaTlF6 were obtained from the Materials Project database (MP-ID: mp-13798, database version v2026.04.13).

Literature Citation

Horton, M.K., Huck, P., Yang, R.X. et al. Accelerated data-driven materials science with the Materials Project. Nat. Mater. 24, 1522–1532 (2025). https://doi.org/10.1038/s41563-025-02272-0

BibTeX
@article{Horton2025,
  author  = {Horton, Matthew K. and Huck, Patrick and Yang, Ruo Xi and Munro, Jason M. and Dwaraknath, Shyam and Ganose, Alex M. and Kingsbury, Ryan S. and Wen, Mingjian and Shen, Jimmy X. and Mathis, Tyler S. and Kaplan, Aaron D. and Berket, Karlo and Riebesell, Janosh and George, Janine and Rosen, Andrew S. and Spotte-Smith, Evan W. C. and McDermott, Matthew J. and Cohen, Orion A. and Dunn, Alex and Kuner, Matthew C. and Rignanese, Gian-Marco and Petretto, Guido and Waroquiers, David and Griffin, Sinead M. and Neaton, Jeffrey B. and Chrzan, Daryl C. and Asta, Mark and Hautier, Geoffroy and Cholia, Shreyas and Ceder, Gerbrand and Ong, Shyue Ping and Jain, Anubhav and Persson, Kristin A.},
  title   = {Accelerated data-driven materials science with the Materials Project},
  journal = {Nature Materials},
  year    = {2025},
  volume  = {24},
  number  = {10},
  pages   = {1522--1532},
  month   = {oct},
  doi     = {10.1038/s41563-025-02272-0},
  issn    = {1476-4660},
  url     = {https://doi.org/10.1038/s41563-025-02272-0},
  abstract = {The Materials Project was launched formally in 2011 to drive materials discovery forwards through high-throughput computation and open data. More than a decade later, the Materials Project has become an indispensable tool used by more than 600,000 materials researchers around the world. This Perspective describes how the Materials Project, as a data platform and a software ecosystem, has helped to shape research in data-driven materials science. We cover how sustainable software and computational methods have accelerated materials design while becoming more open source and collaborative in nature. Next, we present cases where the Materials Project was used to understand and discover functional materials. We then describe our efforts to meet the needs of an expanding user base, through technical infrastructure updates ranging from data architecture and cloud resources to interactive web applications. Finally, we discuss opportunities to better aid the research community, with the vision that more accessible and easy-to-understand materials data will result in democratized materials knowledge and an increasingly collaborative community.}
}

3D Crystal Structure Rendering

Loading 3D structure…

Style: Ball & Stick
Raw CIF Data
# generated using pymatgen
data_K2NaTlF6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.28717348
_cell_length_b   6.28717348
_cell_length_c   6.28717348
_cell_angle_alpha   60.00000000
_cell_angle_beta   60.00000000
_cell_angle_gamma   60.00000000
_symmetry_Int_Tables_number   1
_chemical_formula_structural   K2NaTlF6
_chemical_formula_sum   'K2 Na1 Tl1 F6'
_cell_volume   175.73219478
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  K  K0  1  0.25000000  0.25000000  0.25000000  1.0
  K  K1  1  0.75000000  0.75000000  0.75000000  1.0
  Na  Na2  1  0.50000000  0.50000000  0.50000000  1.0
  Tl  Tl3  1  0.00000000  0.00000000  0.00000000  1.0
  F  F4  1  0.75407600  0.75407600  0.24592400  1.0
  F  F5  1  0.24592400  0.75407600  0.75407600  1.0
  F  F6  1  0.24592400  0.24592400  0.75407600  1.0
  F  F7  1  0.75407600  0.24592400  0.75407600  1.0
  F  F8  1  0.24592400  0.75407600  0.24592400  1.0
  F  F9  1  0.75407600  0.24592400  0.24592400  1.0
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