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Y(AlGe)2

High-Entropy Materials HEA Traditional Materials TRA Elasticity Data ELA

MP-ID: mp-10521 · Space group: P-3m1 (#164)

Basic Information

Formula
Y(AlGe)2
MP-ID
mp-10521
Elements
3
Sites
5
Density
4.5320
g/cm³
Volume
105.58
ų
Cell a
4.2909
Å
Cell b
4.2909
Å
Cell c
6.6215
Å
α Angle
90.00
°
β Angle
90.00
°
γ Angle
120.00
°
Space Group
P-3m1
Point Group
-3m
Crystal System
Trigonal
Bravais Lattice
Trigonal 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
13.37 6.6215 10.2 (0,0,0,1)
26.93 3.3107 4.5 (0,0,0,2)
27.52 3.2406 100.0 (1,0,-1,1)
36.34 2.4720 69.7 (1,0,-1,2)
40.89 2.2072 7.3 (0,0,0,3)
42.12 2.1454 64.8 (2,-1,-1,0)
44.39 2.0410 3.1 (2,-1,-1,1)
47.94 1.8977 24.6 (1,0,-1,3)
50.70 1.8005 4.8 (2,-1,-1,2)
51.06 1.7889 11.7 (2,0,-2,1)
51.06 1.7889 5.9 (2,-2,0,1)
55.51 1.6554 4.0 (0,0,0,4)
56.82 1.6203 18.5 (2,0,-2,2)
60.15 1.5384 13.7 (2,-1,-1,3)
65.69 1.4214 6.2 (2,0,-2,3)
65.69 1.4214 3.1 (2,-2,0,3)
68.26 1.3739 14.3 (3,-1,-2,1)
72.06 1.3106 10.7 (2,-1,-1,4)
73.20 1.2930 5.7 (2,1,-3,2)
73.20 1.2930 11.4 (3,-1,-2,2)
76.34 1.2474 10.2 (1,0,-1,5)
76.98 1.2387 10.5 (3,0,-3,0)
81.17 1.1849 10.2 (3,-1,-2,3)
83.29 1.1601 1.1 (3,0,-3,2)
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Energy Properties

Formation Energy/atom
-0.40969
eV/atom
Energy/atom
-5.05895
eV/atom
Energy above Hull
0.0000
eV/atom
Uncorrected Energy
-5.0590
eV/atom
Volume/atom
21.12
ų
c/a Ratio
1.5432

Electronic Properties

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

Magnetic Properties

Magnetic
No
Total Mag. Moment
0.0040
μB
Mag. Ordering
NM
Mag. Sites
0
Magnetization/Volume
0.000040
μB/ų

Elastic Properties

KVRH
70.326
GPa
GVRH
38.044
GPa
Young's Modulus E
96.696
GPa
Poisson Ratio ν
0.271
Pugh Ratio K/G
1.849
Vickers Hardness Est.
5.190
GPa
Ductility
Brittle
Anisotropy
1.169
Lame λ
44.963
GPa

Feature Analysis

Composition Overview

Element Composition (atomic fraction)
Composition Info
Major / Matrix Element
Al · 0.400
Element Family
PostTransition-Noble
Solute Fraction
0.600
Interstitial Fraction
0.000

High-Entropy Alloy Features

Composite Radar (normalized)
Element-Class Share
Mix Entropy ΔS/R
1.0549
HEA criterion (>1.0 = high entropy)
Mix Entropy ΔS
8.7706
J/mol·K
Ω Parameter
0.3642
Ω > 1.1 favors solid solution
Atomic Size Mismatch δr
14.025%
δr < 6.6% favors single-phase solid solution
Electronegativity Diff Δχ
0.2961
smaller = more stable mixing
VEC
3.400
valence electron concentration, affects phase stability
Mix Enthalpy ΔH_mix
-29.328
kJ/mol; negative = exothermic mixing
Entropy Norm
0.9602
SS Former
0
Phase Tendency
AM

Traditional Material Features

ROM Blended-Feature Radar
Rating & Classification
Tier
B
Score
0.633
Family
Al-rich Multi-Component
Matrix Element
Al · 0.400

Elasticity Features

Elastic Modulus Comparison (GPa)
Elastic Features
Elastic Anisotropy AU
1.1690
Homogeneous Poisson ν
0.2710
Debye Temperature
347.2
K
Sound Velocity
3,224.6
m/s
Homogeneity
0.2710

Related Tasks

Citation & References

Materials Project Page
https://materialsproject.org/materials/mp-10521
Reference Citation

The crystal structure and related material properties of Y(AlGe)2 were obtained from the Materials Project database (MP-ID: mp-10521, 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_Y(AlGe)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.29085574
_cell_length_b   4.29085574
_cell_length_c   6.62146100
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   119.99999599
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Y(AlGe)2
_chemical_formula_sum   'Y1 Al2 Ge2'
_cell_volume   105.57772560
_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
  Y  Y0  1  0.00000000  0.00000000  0.00000000  1.0
  Al  Al1  1  0.66666700  0.33333300  0.35331700  1.0
  Al  Al2  1  0.33333300  0.66666700  0.64668300  1.0
  Ge  Ge3  1  0.66666700  0.33333300  0.74136800  1.0
  Ge  Ge4  1  0.33333300  0.66666700  0.25863200  1.0
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