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SrU2O6

High-Entropy Materials HEA

MP-ID: mp-676249 · Space group: Immm (#71)

Basic Information

Formula
SrU2O6
MP-ID
mp-676249
Elements
3
Sites
9
Density
9.0592
g/cm³
Volume
120.92
ų
Cell a
6.5583
Å
Cell b
6.5583
Å
Cell c
6.5583
Å
α Angle
145.49
°
β Angle
130.12
°
γ Angle
62.07
°
Space Group
Immm
Point Group
mmm
Crystal System
Orthorhombic
Bravais Lattice
Orthorhombic I
Stability
No
Packing Fraction
0.6800

X-ray Diffraction

Diffraction Pattern
X-axis: 2θ (°); Y-axis: relative intensity; CuKa ; λ=1.5406 Å
Diffraction Peaks (Top 24)
2θd (Å)Ihkl
15.77 5.6196 12.5 (1,1,-1)
17.87 4.9625 22.2 (0,1,-1)
24.21 3.6764 10.2 (1,0,-1)
28.04 3.1820 100.0 (1,-1,0)
28.78 3.1018 93.8 (1,2,-2)
31.85 2.8098 2.2 (2,2,-2)
32.33 2.7690 6.9 (2,0,-1)
32.37 2.7654 23.3 (1,-1,1)
33.20 2.6986 43.3 (2,1,-2)
36.20 2.4812 2.6 (0,2,-2)
40.83 2.2100 5.0 (2,-1,0)
42.94 2.1062 4.7 (3,1,-2)
43.46 2.0824 1.9 (2,3,-3)
46.05 1.9709 2.6 (1,3,-3)
46.70 1.9452 17.3 (1,-1,-1)
47.05 1.9314 66.7 (3,0,-1)
48.60 1.8732 15.1 (3,3,-3)
49.59 1.8382 1.5 (2,0,-2)
50.14 1.8193 1.0 (1,-2,2)
50.39 1.8110 3.3 (2,-1,-1)
55.13 1.6660 15.9 (2,-2,1)
55.56 1.6542 15.4 (0,3,-3)
55.78 1.6480 30.6 (3,0,-2)
57.05 1.6143 28.6 (4,2,-3)
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Energy Properties

Formation Energy/atom
-3.66959
eV/atom
Energy/atom
-9.66548
eV/atom
Energy above Hull
0.0568
eV/atom
Uncorrected Energy
-9.2075
eV/atom
Volume/atom
13.44
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
1.9978
μB
Mag. Ordering
FM
Mag. Sites
2
Magnetization/Volume
0.016520
μB/ų

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)
Composition Info
Major / Matrix Element
O · 0.667
Element Family
Metalloid-Nonmetal
Solute Fraction
0.333
Interstitial Fraction
0.000

High-Entropy Alloy Features

Composite Radar (normalized)
Element-Class Share
Mix Entropy ΔS/R
0.8487
HEA criterion (>1.0 = high entropy)
Mix Entropy ΔS
7.0560
J/mol·K
Ω Parameter
0.0000
Ω > 1.1 favors solid solution
Atomic Size Mismatch δr
57.893%
δr < 6.6% favors single-phase solid solution
Electronegativity Diff Δχ
1.0452
smaller = more stable mixing
VEC
3.714
valence electron concentration, affects phase stability
Mix Enthalpy ΔH_mix
0.000
kJ/mol; negative = exothermic mixing
Entropy Norm
0.7725
SS Former
0
Phase Tendency
IM

Related Tasks

Citation & References

Materials Project Page
https://materialsproject.org/materials/mp-676249
Reference Citation

The crystal structure and related material properties of SrU2O6 were obtained from the Materials Project database (MP-ID: mp-676249, 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_SrU2O6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.55831107
_cell_length_b   6.55831107
_cell_length_c   6.55831107
_cell_angle_alpha   145.49278948
_cell_angle_beta   130.12090800
_cell_angle_gamma   62.06577630
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrU2O6
_chemical_formula_sum   'Sr1 U2 O6'
_cell_volume   120.91760737
_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
  Sr  Sr0  1  0.50000000  0.50000000  0.00000000  1.0
  U  U1  1  0.83471000  0.83471000  0.00000000  1.0
  U  U2  1  0.16529000  0.16529000  0.00000000  1.0
  O  O3  1  0.94500600  0.67867100  0.26633500  1.0
  O  O4  1  0.21889500  0.00000000  0.21889500  1.0
  O  O5  1  0.05499400  0.32132900  0.73366500  1.0
  O  O6  1  0.58766300  0.32132900  0.26633500  1.0
  O  O7  1  0.41233700  0.67867100  0.73366500  1.0
  O  O8  1  0.78110500  0.00000000  0.78110500  1.0
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