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Tb2DyLu2Si3

High-Entropy Materials HEA

MP-ID: mp-3296643 · Space group: Cmcm (#63)

Basic Information

Formula
Tb2DyLu2Si3
MP-ID
mp-3296643
Elements
4
Sites
16
Density
8.0156
g/cm³
Volume
378.92
ų
Cell a
8.3642
Å
Cell b
8.3701
Å
Cell c
6.2513
Å
α Angle
90.00
°
β Angle
90.00
°
γ Angle
120.02
°
Space Group
Cmcm
Point Group
mmm
Crystal System
Orthorhombic
Bravais Lattice
Orthorhombic C
Stability
No
Packing Fraction
0.5240

X-ray Diffraction

Diffraction Pattern
X-axis: 2θ (°); Y-axis: relative intensity; CuKa ; λ=1.5406 Å
Diffraction Peaks (Top 24)
2θd (Å)Ihkl
12.21 7.2470 2.4 (1,-1,0,0)
21.23 4.1850 15.0 (1,-2,1,0)
21.25 4.1821 30.8 (2,-1,-1,0)
24.57 3.6235 35.5 (0,2,-2,0)
24.57 3.6235 35.5 (2,-2,0,0)
24.59 3.6210 34.7 (2,0,-2,0)
25.62 3.4777 45.2 (1,-2,1,1)
25.63 3.4760 91.2 (2,-1,-1,1)
28.56 3.1256 14.2 (0,0,0,2)
31.16 2.8701 100.0 (1,-1,0,2)
31.17 2.8697 50.9 (1,0,-1,2)
32.69 2.7397 50.0 (2,-3,1,0)
32.70 2.7383 25.5 (1,2,-3,0)
32.70 2.7383 25.5 (3,-2,-1,0)
32.71 2.7375 50.0 (3,-1,-2,0)
35.78 2.5093 87.7 (2,-3,1,1)
35.80 2.5082 42.8 (1,2,-3,1)
35.80 2.5082 42.8 (3,-2,-1,1)
35.81 2.5076 87.6 (3,-1,-2,1)
35.86 2.5043 93.3 (1,-2,1,2)
35.87 2.5036 92.4 (1,1,-2,2)
35.87 2.5036 92.4 (2,-1,-1,2)
37.22 2.4157 40.5 (0,3,-3,0)
37.22 2.4157 40.5 (3,-3,0,0)
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Energy Properties

Formation Energy/atom
-0.78167
eV/atom
Energy/atom
-25.39613
eV/atom
Energy above Hull
0.0000
eV/atom
Uncorrected Energy
-25.3961
eV/atom
Volume/atom
23.68
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
0.8095
μB
Mag. Ordering
FM
Mag. Sites
6
Magnetization/Volume
0.002140
μB/ų

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)
Composition Info
Major / Matrix Element
Si · 0.375
Element Family
Metalloid-Nonmetal
Solute Fraction
0.625
Interstitial Fraction
0.375

High-Entropy Alloy Features

Composite Radar (normalized)
Element-Class Share
Mix Entropy ΔS/R
1.3209
HEA criterion (>1.0 = high entropy)
Mix Entropy ΔS
10.9819
J/mol·K
Ω Parameter
0.0000
Ω > 1.1 favors solid solution
Atomic Size Mismatch δr
18.322%
δr < 6.6% favors single-phase solid solution
Electronegativity Diff Δχ
0.3482
smaller = more stable mixing
VEC
5.500
valence electron concentration, affects phase stability
Mix Enthalpy ΔH_mix
0.000
kJ/mol; negative = exothermic mixing
Entropy Norm
0.9528
SS Former
0
Phase Tendency
IM

Related Tasks

Related computation task IDs (1)

Citation & References

Materials Project Page
https://materialsproject.org/materials/mp-3296643
Reference Citation

The crystal structure and related material properties of Tb2DyLu2Si3 were obtained from the Materials Project database (MP-ID: mp-3296643, 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_Tb2DyLu2Si3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.36419294
_cell_length_b   8.37006922
_cell_length_c   6.25125115
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   120.02323736
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Tb2DyLu2Si3
_chemical_formula_sum   'Tb4 Dy2 Lu4 Si6'
_cell_volume   378.92122311
_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
  Tb  Tb0  1  0.75561257  0.75549669  0.25000000  1.0
  Tb  Tb1  1  0.75561257  0.00011588  0.75000000  1.0
  Tb  Tb2  1  0.24438743  0.24450331  0.75000000  1.0
  Tb  Tb3  1  0.24438743  0.99988412  0.25000000  1.0
  Dy  Dy4  1  1.00000000  0.75488811  0.75000000  1.0
  Dy  Dy5  1  0.00000000  0.24511189  0.25000000  1.0
  Lu  Lu6  1  0.33308475  0.66654337  0.50000000  1.0
  Lu  Lu7  1  0.66691525  0.33345663  0.00000000  1.0
  Lu  Lu8  1  0.66691525  0.33345663  0.50000000  1.0
  Lu  Lu9  1  0.33308475  0.66654337  0.00000000  1.0
  Si  Si10  1  0.39546656  0.99959187  0.75000000  1.0
  Si  Si11  1  0.39546656  0.39587469  0.25000000  1.0
  Si  Si12  1  1.00000000  0.60337257  0.25000000  1.0
  Si  Si13  1  0.00000000  0.39662743  0.75000000  1.0
  Si  Si14  1  0.60453344  0.60412531  0.75000000  1.0
  Si  Si15  1  0.60453344  0.00040813  0.25000000  1.0
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