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Dy2MgGe2

High-Entropy Materials HEA Traditional Materials TRA Elasticity Data ELA

MP-ID: mp-977559 · Space group: P4/mbm (#127)

Basic Information

Formula
Dy2MgGe2
MP-ID
mp-977559
Elements
3
Sites
10
Density
7.4299
g/cm³
Volume
221.07
ų
Cell a
7.2361
Å
Cell b
7.2361
Å
Cell c
4.2221
Å
α Angle
90.00
°
β Angle
90.00
°
γ Angle
90.00
°
Space Group
P4/mbm
Point Group
4/mmm
Crystal System
Tetragonal
Bravais Lattice
Tetragonal P
Stability
Yes
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
17.33 5.1167 32.7 (1,1,0)
21.04 4.2221 16.1 (0,0,1)
24.61 3.6181 30.7 (2,0,0)
27.56 3.2361 24.7 (2,1,0)
32.59 2.7473 55.5 (2,0,1)
34.93 2.5684 100.0 (2,-1,1)
34.93 2.5684 100.0 (2,1,1)
35.08 2.5584 4.8 (2,-2,0)
35.08 2.5584 4.8 (2,2,0)
39.38 2.2883 18.3 (3,-1,0)
39.38 2.2883 18.3 (3,1,0)
41.26 2.1880 3.8 (2,2,-1)
41.26 2.1880 1.3 (2,2,1)
42.84 2.1111 31.6 (0,0,2)
45.06 2.0118 1.2 (3,1,1)
45.18 2.0069 5.7 (3,-2,0)
45.18 2.0069 5.7 (3,2,0)
46.54 1.9515 5.2 (1,1,2)
50.02 1.8234 9.2 (2,0,2)
50.34 1.8126 1.1 (3,-2,1)
50.34 1.8126 1.1 (3,2,1)
50.45 1.8090 3.3 (4,0,0)
50.45 1.8090 3.3 (0,4,0)
51.70 1.7681 9.0 (2,1,2)
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Energy Properties

Formation Energy/atom
-0.76509
eV/atom
Energy/atom
-4.78775
eV/atom
Energy above Hull
0.0000
eV/atom
Uncorrected Energy
-20.0548
eV/atom
Volume/atom
22.11
ų
c/a Ratio
0.5835

Electronic Properties

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

Magnetic Properties

Magnetic
Yes
Total Mag. Moment
0.0000
μB
Mag. Ordering
Unknown
Mag. Sites
0
Magnetization/Volume
0.000000
μB/ų

Elastic Properties

KVRH
73.819
GPa
GVRH
55.444
GPa
Young's Modulus E
133.027
GPa
Poisson Ratio ν
0.200
Pugh Ratio K/G
1.331
Vickers Hardness Est.
11.988
GPa
Ductility
Ductile
Anisotropy
0.511
Lame λ
36.856
GPa

Feature Analysis

Composition Overview

Element Composition (atomic fraction)
Composition Info
Major / Matrix Element
Dy · 0.400
Element Family
Lanthanide
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
1.1203
Ω > 1.1 favors solid solution
Atomic Size Mismatch δr
14.944%
δr < 6.6% favors single-phase solid solution
Electronegativity Diff Δχ
0.3738
smaller = more stable mixing
VEC
6.000
valence electron concentration, affects phase stability
Mix Enthalpy ΔH_mix
-10.500
kJ/mol; negative = exothermic mixing
Entropy Norm
0.9602
SS Former
0
Phase Tendency
IM

Traditional Material Features

ROM Blended-Feature Radar
Rating & Classification
Tier
B
Score
0.468
Family
Dy-rich Multi-Component
Matrix Element
Dy · 0.400

Elasticity Features

Elastic Modulus Comparison (GPa)
Elastic Features
Elastic Anisotropy AU
0.5110
Homogeneous Poisson ν
0.2000
Debye Temperature
456.9
K
Sound Velocity
3,015.7
m/s
Homogeneity
0.2000

Related Tasks

Related computation task IDs (3)

Citation & References

Materials Project Page
https://materialsproject.org/materials/mp-977559
Reference Citation

The crystal structure and related material properties of Dy2MgGe2 were obtained from the Materials Project database (MP-ID: mp-977559, 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_Dy2MgGe2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.23610778
_cell_length_b   7.23610761
_cell_length_c   4.22210261
_cell_angle_alpha   90.00000051
_cell_angle_beta   90.00000080
_cell_angle_gamma   90.00001299
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Dy2MgGe2
_chemical_formula_sum   'Dy4 Mg2 Ge4'
_cell_volume   221.07458960
_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
  Dy  Dy0  1  0.17748151  0.32251850  0.49999999  1.0
  Dy  Dy1  1  0.32251866  0.82251907  0.50000003  1.0
  Dy  Dy2  1  0.67748094  0.17748134  0.49999999  1.0
  Dy  Dy3  1  0.82251863  0.67748138  0.50000001  1.0
  Mg  Mg4  1  0.00000014  0.00000010  0.99999995  1.0
  Mg  Mg5  1  0.49999990  0.49999986  0.00000003  1.0
  Ge  Ge6  1  0.12301216  0.62301093  0.99999984  1.0
  Ge  Ge7  1  0.37698807  0.12301193  0.99999997  1.0
  Ge  Ge8  1  0.62301089  0.87698907  0.00000002  1.0
  Ge  Ge9  1  0.87698910  0.37698783  0.00000018  1.0
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