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KHoO2

Elasticity Data ELA

MP-ID: mp-754883 · Space group: R-3m (#166)

Basic Information

Formula
KHoO2
MP-ID
mp-754883
Elements
3
Sites
4
Density
6.2094
g/cm³
Volume
63.12
ų
Cell a
6.4999
Å
Cell b
6.4999
Å
Cell c
6.4999
Å
α Angle
30.61
°
β Angle
30.61
°
γ Angle
30.61
°
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
14.31 6.1906 100.0 (1,1,1)
28.84 3.0953 34.7 (2,2,2)
30.47 2.9342 25.2 (1,0,0)
30.47 2.9342 12.6 (0,0,1)
31.61 2.8301 49.1 (1,0,1)
31.61 2.8301 24.5 (1,1,0)
35.88 2.5028 96.7 (2,1,1)
38.81 2.3204 10.2 (2,1,2)
38.81 2.3204 5.1 (2,2,1)
43.87 2.0635 3.1 (3,3,3)
45.85 1.9791 13.4 (3,2,2)
45.85 1.9791 6.7 (2,2,3)
49.85 1.8294 21.8 (3,2,3)
49.85 1.8294 10.9 (3,3,2)
53.41 1.7156 10.1 (1,-1,0)
53.41 1.7156 20.1 (1,0,-1)
55.59 1.6533 6.4 (2,0,1)
55.59 1.6533 12.8 (2,1,0)
58.62 1.5749 16.5 (4,3,3)
59.75 1.5477 5.4 (4,4,4)
61.83 1.5005 8.2 (3,1,2)
61.83 1.5005 8.2 (2,1,3)
61.83 1.5005 8.2 (3,2,1)
62.74 1.4810 3.6 (1,-1,1)
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Energy Properties

Formation Energy/atom
-3.11859
eV/atom
Energy/atom
-7.02483
eV/atom
Energy above Hull
0.0000
eV/atom
Uncorrected Energy
-15.7810
eV/atom
Volume/atom
15.78
ų
c/a Ratio
1.0000

Electronic Properties

Metallic
Non-metal
Band Gap
3.974
eV
Direct Gap
Yes
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
82.791
GPa
GVRH
47.939
GPa
Young's Modulus E
120.549
GPa
Poisson Ratio ν
0.257
Pugh Ratio K/G
1.727
Vickers Hardness Est.
7.153
GPa
Ductility
Ductile
Anisotropy
0.844
Lame λ
50.832
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
0.8440
Homogeneous Poisson ν
0.2570
Homogeneity
0.2570

Related Tasks

Citation & References

Materials Project Page
https://materialsproject.org/materials/mp-754883
Reference Citation

The crystal structure and related material properties of KHoO2 were obtained from the Materials Project database (MP-ID: mp-754883, 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_KHoO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.49985837
_cell_length_b   6.49985837
_cell_length_c   6.49985851
_cell_angle_alpha   30.60852717
_cell_angle_beta   30.60852717
_cell_angle_gamma   30.60853680
_symmetry_Int_Tables_number   1
_chemical_formula_structural   KHoO2
_chemical_formula_sum   'K1 Ho1 O2'
_cell_volume   63.11882129
_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
  Ho  Ho1  1  0.50000000  0.50000000  0.50000000  1.0
  O  O2  1  0.22840725  0.22840725  0.22840725  1.0
  O  O3  1  0.77159375  0.77159375  0.77159375  1.0
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