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KNdO2

Elasticity Data ELA

MP-ID: mp-754158 · Space group: R-3m (#166)

Basic Information

Formula
KNdO2
MP-ID
mp-754158
Elements
3
Sites
4
Density
5.0489
g/cm³
Volume
70.82
ų
Cell a
6.5747
Å
Cell b
6.5747
Å
Cell c
6.5747
Å
α Angle
31.98
°
β Angle
31.98
°
γ Angle
31.98
°
Space Group
R-3m
Point Group
-3m
Crystal System
Trigonal
Bravais Lattice
Trigonal R
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 24)
2θd (Å)Ihkl
14.21 6.2332 80.1 (1,1,1)
28.64 3.1166 29.8 (2,2,2)
28.86 3.0937 11.2 (0,0,1)
28.86 3.0937 22.3 (1,0,0)
30.05 2.9740 71.8 (1,1,0)
34.43 2.6048 100.0 (2,1,1)
37.42 2.4034 12.7 (2,2,1)
43.56 2.0777 2.3 (3,3,3)
44.55 2.0338 17.4 (3,2,2)
48.57 1.8743 32.7 (3,3,2)
50.39 1.8111 32.9 (1,0,-1)
52.63 1.7392 17.6 (2,1,0)
57.37 1.6062 14.6 (4,3,3)
58.99 1.5659 23.8 (3,2,1)
59.11 1.5630 1.7 (1,1,-1)
59.11 1.5630 3.3 (1,-1,1)
59.30 1.5583 5.1 (4,4,4)
59.79 1.5468 10.6 (2,0,0)
62.10 1.4946 4.6 (4,3,4)
62.10 1.4946 2.3 (4,4,3)
62.46 1.4870 16.0 (2,2,0)
64.42 1.4464 1.0 (1,1,3)
64.42 1.4464 2.1 (3,1,1)
68.76 1.3652 4.4 (4,3,2)
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Energy Properties

Formation Energy/atom
-2.95017
eV/atom
Energy/atom
-6.89903
eV/atom
Energy above Hull
0.0000
eV/atom
Uncorrected Energy
-14.7128
eV/atom
Volume/atom
17.71
ų
c/a Ratio
1.0000

Electronic Properties

Metallic
Non-metal
Band Gap
3.709
eV
Direct Gap
No
CBM
N/A
eV

Magnetic Properties

Magnetic
Yes
Total Mag. Moment
0.0000
μB
Mag. Ordering
Unknown
Mag. Sites
0
Magnetization/Volume
0.000000
μB/ų

Elastic Properties

KVRH
69.683
GPa
GVRH
38.368
GPa
Young's Modulus E
97.254
GPa
Poisson Ratio ν
0.267
Pugh Ratio K/G
1.816
Vickers Hardness Est.
5.403
GPa
Ductility
Brittle
Anisotropy
0.950
Lame λ
44.104
GPa

Feature Analysis

Composition Overview

Element Composition (atomic fraction)
Composition Info
Major / Matrix Element
O · 0.500
Element Family
Metalloid-Nonmetal
Solute Fraction
0.500
Interstitial Fraction
0.000

Elasticity Features

Elastic Modulus Comparison (GPa)
Elastic Features
Elastic Anisotropy AU
0.9500
Homogeneous Poisson ν
0.2670
Debye Temperature
400.3
K
Sound Velocity
3,066.8
m/s
Homogeneity
0.2670

Related Tasks

Citation & References

Materials Project Page
https://materialsproject.org/materials/mp-754158
Reference Citation

The crystal structure and related material properties of KNdO2 were obtained from the Materials Project database (MP-ID: mp-754158, 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_KNdO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.57468352
_cell_length_b   6.57468352
_cell_length_c   6.57468365
_cell_angle_alpha   31.97909389
_cell_angle_beta   31.97909389
_cell_angle_gamma   31.97909225
_symmetry_Int_Tables_number   1
_chemical_formula_structural   KNdO2
_chemical_formula_sum   'K1 Nd1 O2'
_cell_volume   70.82338820
_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  -0.00000000  0.00000000  -0.00000000  1.0
  Nd  Nd1  1  0.50000000  0.50000000  0.50000000  1.0
  O  O2  1  0.23104620  0.23104620  0.23104620  1.0
  O  O3  1  0.76895380  0.76895380  0.76895380  1.0
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