Navigation

HEAS Data Platform · Materials Science Database

EuHO3

High-Entropy Materials HEA Traditional Materials TRA

MP-ID: mp-1078670 · Space group: P2_1/m (#11)

Basic Information

Formula
EuHO3
MP-ID
mp-1078670
Elements
3
Sites
10
Density
5.7986
g/cm³
Volume
115.10
ų
Cell a
3.7651
Å
Cell b
5.6897
Å
Cell c
5.8854
Å
α Angle
65.92
°
β Angle
90.00
°
γ Angle
90.00
°
Space Group
P2_1/m
Point Group
2/m
Crystal System
Monoclinic
Bravais Lattice
Monoclinic P
Stability
No
Packing Fraction
0.5240

X-ray Diffraction

Diffraction Pattern
X-axis: 2θ (°); Y-axis: relative intensity; CuKa ; λ=1.5406 Å
Diffraction Peaks (Top 24)
2θd (Å)Ihkl
16.50 5.3731 47.7 (0,0,1)
17.07 5.1945 47.1 (0,1,0)
18.28 4.8531 90.2 (0,1,1)
28.36 3.1475 61.9 (0,1,-1)
28.96 3.0834 100.0 (1,0,1)
29.30 3.0485 80.3 (1,1,0)
30.04 2.9748 58.6 (1,1,1)
30.60 2.9219 43.9 (0,1,2)
31.56 2.8352 35.0 (0,2,1)
33.35 2.6865 17.4 (0,0,2)
34.53 2.5972 21.4 (0,2,0)
37.05 2.4266 1.2 (0,2,2)
37.23 2.4148 2.0 (1,1,-1)
39.02 2.3083 25.7 (1,1,2)
39.80 2.2649 1.8 (1,2,1)
41.28 2.1869 32.3 (1,0,2)
42.27 2.1379 43.0 (1,2,0)
44.42 2.0396 52.7 (1,2,2)
44.51 2.0355 6.6 (0,2,-1)
48.35 1.8825 28.7 (2,0,0)
48.56 1.8747 10.3 (0,2,3)
49.66 1.8360 15.0 (0,3,2)
50.36 1.8118 27.1 (1,1,-2)
50.99 1.7910 17.2 (0,0,3)
Get direct link

Energy Properties

Formation Energy/atom
-1.73492
eV/atom
Energy/atom
-7.44035
eV/atom
Energy above Hull
0.3717
eV/atom
Uncorrected Energy
-7.0282
eV/atom
Volume/atom
11.51
ų
c/a Ratio
-

Electronic Properties

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

Magnetic Properties

Magnetic
Yes
Total Mag. Moment
7.9836
μB
Mag. Ordering
FiM
Mag. Sites
6
Magnetization/Volume
0.069360
μB/ų

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

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

High-Entropy Alloy Features

Composite Radar (normalized)
Element-Class Share
Mix Entropy ΔS/R
0.9503
HEA criterion (>1.0 = high entropy)
Mix Entropy ΔS
7.9005
J/mol·K
Ω Parameter
0.0000
Ω > 1.1 favors solid solution
Atomic Size Mismatch δr
70.757%
δr < 6.6% favors single-phase solid solution
Electronegativity Diff Δχ
0.9092
smaller = more stable mixing
VEC
4.000
valence electron concentration, affects phase stability
Mix Enthalpy ΔH_mix
0.000
kJ/mol; negative = exothermic mixing
Entropy Norm
0.8650
SS Former
0
Phase Tendency
IM

Traditional Material Features

ROM Blended-Feature Radar
Rating & Classification
Tier
C
Score
0.294
Family
O-rich Multi-Component
Matrix Element
O · 0.600

Related Tasks

Related computation task IDs (3)

Citation & References

Materials Project Page
https://materialsproject.org/materials/mp-1078670
Reference Citation

The crystal structure and related material properties of EuHO3 were obtained from the Materials Project database (MP-ID: mp-1078670, 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_EuHO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.76504500
_cell_length_b   5.68973100
_cell_length_c   5.88538148
_cell_angle_alpha   65.91697234
_cell_angle_beta   90.00000000
_cell_angle_gamma   90.00000000
_symmetry_Int_Tables_number   1
_chemical_formula_structural   EuHO3
_chemical_formula_sum   'Eu2 H2 O6'
_cell_volume   115.10281361
_cell_formula_units_Z   2
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
  Eu  Eu0  1  0.25000000  0.68210400  0.68678700  1.0
  Eu  Eu1  1  0.75000000  0.31789600  0.31321300  1.0
  H  H2  1  0.25000000  0.12026800  0.00949300  1.0
  H  H3  1  0.75000000  0.87973200  0.99050700  1.0
  O  O4  1  0.25000000  0.58116900  0.33271400  1.0
  O  O5  1  0.25000000  0.11779400  0.58239000  1.0
  O  O6  1  0.25000000  0.27219600  0.04776200  1.0
  O  O7  1  0.75000000  0.41883100  0.66728600  1.0
  O  O8  1  0.75000000  0.88220600  0.41761000  1.0
  O  O9  1  0.75000000  0.72780400  0.95223800  1.0
Get direct link