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ScGeAu

High-Entropy Materials HEA Traditional Materials TRA Elasticity Data ELA

MP-ID: mp-9350 · Space group: P6_3mc (#186)

Basic Information

Formula
ScGeAu
MP-ID
mp-9350
Elements
3
Sites
6
Density
9.3220
g/cm³
Volume
112.07
ų
Cell a
4.3258
Å
Cell b
4.3258
Å
Cell c
6.9154
Å
α Angle
90.00
°
β Angle
90.00
°
γ Angle
120.00
°
Space Group
P6_3mc
Point Group
6mm
Crystal System
Hexagonal
Bravais Lattice
Hexagonal P
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
23.75 3.7462 44.4 (1,0,-1,0)
25.77 3.4577 53.0 (0,0,0,2)
27.07 3.2940 82.5 (1,-1,0,1)
27.07 3.2940 41.2 (1,0,-1,1)
35.33 2.5409 100.0 (1,0,-1,2)
41.76 2.1629 84.9 (2,-1,-1,0)
41.76 2.1629 42.4 (1,1,-2,0)
46.24 1.9632 78.8 (1,0,-1,3)
48.61 1.8731 2.4 (2,-2,0,0)
48.61 1.8731 2.4 (0,2,-2,0)
48.61 1.8731 2.4 (2,0,-2,0)
49.72 1.8337 18.9 (1,-2,1,2)
49.72 1.8337 37.8 (2,-1,-1,2)
50.48 1.8080 15.7 (2,-2,0,1)
50.48 1.8080 7.8 (2,0,-2,1)
52.96 1.7289 5.8 (0,0,0,4)
55.82 1.6470 17.4 (2,-2,0,2)
55.82 1.6470 8.7 (2,0,-2,2)
58.83 1.5698 3.8 (1,0,-1,4)
64.05 1.4537 20.0 (2,-2,0,3)
64.05 1.4537 10.0 (2,0,-2,3)
65.98 1.4159 2.0 (2,-3,1,0)
65.98 1.4159 3.0 (3,-1,-2,0)
65.98 1.4159 1.0 (2,1,-3,0)
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Energy Properties

Formation Energy/atom
-0.79067
eV/atom
Energy/atom
-26.07581
eV/atom
Energy above Hull
0.0000
eV/atom
Uncorrected Energy
-26.0758
eV/atom
Volume/atom
18.68
ų
c/a Ratio
1.5987

Electronic Properties

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

Magnetic Properties

Magnetic
Yes
Total Mag. Moment
0.0015
μB
Mag. Ordering
Unknown
Mag. Sites
0
Magnetization/Volume
0.000010
μB/ų

Elastic Properties

KVRH
100.236
GPa
GVRH
44.379
GPa
Young's Modulus E
116.015
GPa
Poisson Ratio ν
0.307
Pugh Ratio K/G
2.259
Vickers Hardness Est.
4.090
GPa
Ductility
Brittle
Anisotropy
0.341
Lame λ
70.650
GPa

Feature Analysis

Composition Overview

Element Composition (atomic fraction)
Composition Info
Major / Matrix Element
Sc · 0.333
Element Family
3d-TM
Solute Fraction
0.667
Interstitial Fraction
0.000

High-Entropy Alloy Features

Composite Radar (normalized)
Element-Class Share
Mix Entropy ΔS/R
1.0986
HEA criterion (>1.0 = high entropy)
Mix Entropy ΔS
9.1339
J/mol·K
Ω Parameter
0.2596
Ω > 1.1 favors solid solution
Atomic Size Mismatch δr
10.515%
δr < 6.6% favors single-phase solid solution
Electronegativity Diff Δχ
0.4826
smaller = more stable mixing
VEC
6.000
valence electron concentration, affects phase stability
Mix Enthalpy ΔH_mix
-51.168
kJ/mol; negative = exothermic mixing
Entropy Norm
1.0000
SS Former
0
Phase Tendency
AM

Traditional Material Features

ROM Blended-Feature Radar
Rating & Classification
Tier
C
Score
0.430
Family
Sc-rich Multi-Component
Matrix Element
Sc · 0.333

Elasticity Features

Elastic Modulus Comparison (GPa)
Elastic Features
Elastic Anisotropy AU
0.3410
Homogeneous Poisson ν
0.3070
Debye Temperature
273.6
K
Sound Velocity
2,439.3
m/s
Homogeneity
0.3070

Related Tasks

Citation & References

Materials Project Page
https://materialsproject.org/materials/mp-9350
Reference Citation

The crystal structure and related material properties of ScGeAu were obtained from the Materials Project database (MP-ID: mp-9350, 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_ScGeAu
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.32577329
_cell_length_b   4.32577397
_cell_length_c   6.91540042
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   120.00001014
_symmetry_Int_Tables_number   1
_chemical_formula_structural   ScGeAu
_chemical_formula_sum   'Sc2 Ge2 Au2'
_cell_volume   112.06641973
_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
  Sc  Sc0  1  -0.00000000  0.00000000  0.00198724  1.0
  Sc  Sc1  1  -0.00000000  0.00000000  0.50198724  1.0
  Ge  Ge2  1  0.33333300  0.66666700  0.29977945  1.0
  Ge  Ge3  1  0.66666700  0.33333300  0.79977945  1.0
  Au  Au4  1  0.33333300  0.66666700  0.69743332  1.0
  Au  Au5  1  0.66666700  0.33333300  0.19743332  1.0
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