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Ho

Traditional Materials TRA Elasticity Data ELA

MP-ID: mp-10659 · Space group: R-3m (#166)

Basic Information

Formula
Ho
MP-ID
mp-10659
Elements
1
Sites
3
Density
8.8091
g/cm³
Volume
93.27
ų
Cell a
3.5680
Å
Cell b
3.5680
Å
Cell c
8.7069
Å
α Angle
78.18
°
β Angle
78.18
°
γ Angle
60.00
°
Space Group
R-3m
Point Group
-3m
Crystal System
Trigonal
Bravais Lattice
Trigonal R
Stability
No
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
29.11 3.0674 37.3 (1,0,0)
29.11 3.0674 18.7 (1,1,1)
29.76 3.0023 14.9 (1,0,1)
29.76 3.0023 7.4 (1,1,0)
31.73 2.8199 73.6 (0,0,3)
32.22 2.7781 100.0 (1,0,-1)
32.22 2.7781 50.0 (1,1,2)
33.97 2.6394 88.4 (1,0,2)
33.97 2.6394 44.2 (1,1,-1)
38.27 2.3518 7.8 (1,0,-2)
38.27 2.3517 3.9 (1,1,3)
40.76 2.2135 14.4 (1,0,3)
40.76 2.2135 7.2 (1,1,-2)
46.29 1.9612 11.1 (1,0,-3)
46.29 1.9612 5.5 (1,1,4)
49.29 1.8487 3.6 (1,0,4)
49.29 1.8487 1.8 (1,1,-3)
51.21 1.7840 19.4 (1,-1,0)
51.21 1.7840 38.8 (2,1,1)
55.69 1.6504 21.0 (1,0,-4)
55.69 1.6504 10.5 (1,1,5)
59.08 1.5636 18.5 (1,0,5)
59.08 1.5636 9.2 (1,1,-4)
59.99 1.5422 4.9 (2,0,1)
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Energy Properties

Formation Energy/atom
0.01527
eV/atom
Energy/atom
-32.86607
eV/atom
Energy above Hull
0.0153
eV/atom
Uncorrected Energy
-32.8661
eV/atom
Volume/atom
31.09
ų
c/a Ratio
2.4402

Electronic Properties

Metallic
Metal
Band Gap
0
eV
Direct Gap
No
CBM
N/A
eV

Magnetic Properties

Magnetic
Yes
Total Mag. Moment
0.0007
μB
Mag. Ordering
Unknown
Mag. Sites
0
Magnetization/Volume
0.000010
μB/ų

Elastic Properties

KVRH
42.255
GPa
GVRH
27.815
GPa
Young's Modulus E
68.430
GPa
Poisson Ratio ν
0.230
Pugh Ratio K/G
1.519
Vickers Hardness Est.
5.580
GPa
Ductility
Ductile
Anisotropy
0.219
Lame λ
23.712
GPa

Feature Analysis

Composition Overview

Element Composition (atomic fraction)
Composition Info
Major / Matrix Element
Ho · 1.000
Element Family
N/A
Solute Fraction
0.000
Interstitial Fraction
0.000

Traditional Material Features

ROM Blended-Feature Radar
Rating & Classification
Tier
A
Score
0.563
Family
Pure Metal
Matrix Element
Ho · 1.000

Elasticity Features

Elastic Modulus Comparison (GPa)
Elastic Features
Elastic Anisotropy AU
0.2190
Homogeneous Poisson ν
0.2300
Homogeneity
0.2300

Related Tasks

Citation & References

Materials Project Page
https://materialsproject.org/materials/mp-10659
Reference Citation

The crystal structure and related material properties of Ho were obtained from the Materials Project database (MP-ID: mp-10659, 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_Ho
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.56802952
_cell_length_b   3.56802952
_cell_length_c   8.70684944
_cell_angle_alpha   78.17648604
_cell_angle_beta   78.17648604
_cell_angle_gamma   60.00004598
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ho
_chemical_formula_sum   Ho3
_cell_volume   93.26955877
_cell_formula_units_Z   3
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
  Ho  Ho0  1  0.00000000  0.00000000  -0.00000000  1.0
  Ho  Ho1  1  0.22193247  0.22193247  0.33420558  1.0
  Ho  Ho2  1  0.77806753  0.77806753  0.66579442  1.0
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