Navigation

HEAS Data Platform · Materials Science Database

Dy2Al3Cu3Si2

High-Entropy Materials HEA

MP-ID: mp-3291748 · Space group: Ibam (#72)

Basic Information

Formula
Dy2Al3Cu3Si2
MP-ID
mp-3291748
Elements
4
Sites
20
Density
6.5439
g/cm³
Volume
331.28
ų
Cell a
8.1683
Å
Cell b
8.1752
Å
Cell c
8.1704
Å
α Angle
139.58
°
β Angle
100.29
°
γ Angle
93.42
°
Space Group
Ibam
Point Group
mmm
Crystal System
Orthorhombic
Bravais Lattice
Orthorhombic I
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
15.82 5.6034 4.9 (1,1,-1)
16.94 5.2355 100.0 (1,-1,1)
23.25 3.8260 2.3 (0,2,-2)
23.26 3.8250 2.3 (2,0,0)
23.92 3.7203 30.0 (0,2,-1)
23.92 3.7198 30.0 (1,1,0)
23.95 3.7163 29.9 (1,1,-2)
23.95 3.7158 29.9 (2,0,-1)
24.50 3.6330 4.3 (1,-2,1)
24.51 3.6326 4.2 (1,0,1)
24.52 3.6311 4.2 (0,1,-2)
24.52 3.6307 4.3 (2,-1,0)
25.31 3.5187 6.1 (1,2,-2)
25.32 3.5181 6.1 (2,1,-1)
26.75 3.3327 5.3 (1,-2,2)
26.75 3.3322 5.3 (2,-1,1)
31.69 2.8231 72.0 (1,-1,-1)
31.94 2.8017 70.2 (2,2,-2)
33.45 2.6787 1.5 (0,3,-2)
33.46 2.6781 1.5 (2,1,0)
33.48 2.6764 1.5 (1,2,-3)
33.49 2.6759 1.5 (3,0,-1)
33.83 2.6493 2.6 (1,-2,0)
33.84 2.6492 2.6 (0,1,1)
Get direct link

Energy Properties

Formation Energy/atom
-0.59577
eV/atom
Energy/atom
-14.02055
eV/atom
Energy above Hull
0.0000
eV/atom
Uncorrected Energy
-14.0206
eV/atom
Volume/atom
16.56
ų
c/a Ratio
-

Electronic Properties

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

Magnetic Properties

Magnetic
No
Total Mag. Moment
0.0001
μB
Mag. Ordering
NM
Mag. Sites
0
Magnetization/Volume
0.000000
μB/ų

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)
Composition Info
Major / Matrix Element
Al · 0.300
Element Family
PostTransition-Noble
Solute Fraction
0.700
Interstitial Fraction
0.200

High-Entropy Alloy Features

Composite Radar (normalized)
Element-Class Share
Mix Entropy ΔS/R
1.3662
HEA criterion (>1.0 = high entropy)
Mix Entropy ΔS
11.3582
J/mol·K
Ω Parameter
2.2598
Ω > 1.1 favors solid solution
Atomic Size Mismatch δr
14.256%
δr < 6.6% favors single-phase solid solution
Electronegativity Diff Δχ
0.2607
smaller = more stable mixing
VEC
7.000
valence electron concentration, affects phase stability
Mix Enthalpy ΔH_mix
-6.840
kJ/mol; negative = exothermic mixing
Entropy Norm
0.9855
SS Former
0
Phase Tendency
IM

Related Tasks

Related computation task IDs (1)

Citation & References

Materials Project Page
https://materialsproject.org/materials/mp-3291748
Reference Citation

The crystal structure and related material properties of Dy2Al3Cu3Si2 were obtained from the Materials Project database (MP-ID: mp-3291748, 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_Dy2Al3Cu3Si2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.16833964
_cell_length_b   8.17519999
_cell_length_c   8.17040982
_cell_angle_alpha   139.58449282
_cell_angle_beta   100.28724690
_cell_angle_gamma   93.41858886
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Dy2Al3Cu3Si2
_chemical_formula_sum   'Dy4 Al6 Cu6 Si4'
_cell_volume   331.27680897
_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  0.12628466  0.87406762  0.25205899  1.0
  Dy  Dy1  1  0.87371534  0.12593238  0.74794101  1.0
  Dy  Dy2  1  0.37798186  0.62572146  0.75203686  1.0
  Dy  Dy3  1  0.62201814  0.37427854  0.24796314  1.0
  Al  Al4  1  0.00008977  0.74990472  0.74991287  1.0
  Al  Al5  1  0.99991023  0.25009528  0.25008713  1.0
  Al  Al6  1  0.25004834  0.00024658  0.75015160  1.0
  Al  Al7  1  0.74982474  0.49993185  0.74999037  1.0
  Al  Al8  1  0.74995166  0.99975342  0.24984840  1.0
  Al  Al9  1  0.25017526  0.50006815  0.25000963  1.0
  Cu  Cu10  1  0.26524187  0.12564421  0.13959910  1.0
  Cu  Cu11  1  0.50006484  0.24985474  0.74991997  1.0
  Cu  Cu12  1  0.98624518  0.62574537  0.36027569  1.0
  Cu  Cu13  1  0.01375482  0.37425463  0.63972431  1.0
  Cu  Cu14  1  0.73475813  0.87435579  0.86040090  1.0
  Cu  Cu15  1  0.49993516  0.75014526  0.25008003  1.0
  Si  Si16  1  0.76056858  0.61849444  0.14207081  1.0
  Si  Si17  1  0.47650917  0.11866154  0.35806240  1.0
  Si  Si18  1  0.52349083  0.88133846  0.64193760  1.0
  Si  Si19  1  0.23943142  0.38150556  0.85792919  1.0
Get direct link