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Eu3(Cu2Sn)4

High-Entropy Materials HEA Traditional Materials TRA

MP-ID: mp-11638 · Space group: P6_3mc (#186)

Basic Information

Formula
Eu3(Cu2Sn)4
MP-ID
mp-11638
Elements
3
Sites
30
Density
8.2658
g/cm³
Volume
578.21
ų
Cell a
9.2356
Å
Cell b
9.2356
Å
Cell c
7.8276
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
No
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
11.06 7.9982 4.6 (1,0,-1,0)
22.23 3.9991 2.5 (2,0,-2,0)
25.00 3.5613 15.1 (2,0,-2,1)
25.34 3.5155 5.7 (1,0,-1,2)
29.55 3.0231 6.7 (3,-1,-2,0)
29.93 2.9857 7.1 (2,-1,-1,2)
31.73 2.8201 28.2 (3,-1,-2,1)
32.00 2.7972 100.0 (2,0,-2,2)
33.62 2.6661 5.4 (3,0,-3,0)
35.57 2.5237 38.3 (3,0,-3,1)
36.21 2.4806 32.5 (1,0,-1,3)
37.60 2.3925 26.9 (3,-1,-2,2)
39.01 2.3089 99.4 (4,-2,-2,0)
40.96 2.2034 15.4 (3,0,-3,2)
41.32 2.1852 23.9 (2,0,-2,3)
42.35 2.1343 8.3 (4,-1,-3,1)
45.62 1.9886 10.8 (4,-2,-2,2)
45.95 1.9752 8.7 (3,-1,-2,3)
46.40 1.9569 8.9 (0,0,0,4)
46.90 1.9374 8.4 (4,0,-4,1)
47.09 1.9299 1.8 (3,1,-4,2)
47.09 1.9299 3.7 (4,-1,-3,2)
48.84 1.8648 16.0 (3,0,-3,3)
50.66 1.8018 2.7 (2,-1,-1,4)
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Energy Properties

Formation Energy/atom
-0.30221
eV/atom
Energy/atom
-5.61530
eV/atom
Energy above Hull
0.0022
eV/atom
Uncorrected Energy
-5.6153
eV/atom
Volume/atom
19.27
ų
c/a Ratio
0.8475

Electronic Properties

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

Magnetic Properties

Magnetic
Yes
Total Mag. Moment
42.0703
μB
Mag. Ordering
FM
Mag. Sites
6
Magnetization/Volume
0.072760
μB/ų

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)
Composition Info
Major / Matrix Element
Cu · 0.533
Element Family
3d-TM
Solute Fraction
0.467
Interstitial Fraction
0.000

High-Entropy Alloy Features

Composite Radar (normalized)
Element-Class Share
Mix Entropy ΔS/R
1.0096
HEA criterion (>1.0 = high entropy)
Mix Entropy ΔS
8.3939
J/mol·K
Ω Parameter
1.9896
Ω > 1.1 favors solid solution
Atomic Size Mismatch δr
15.108%
δr < 6.6% favors single-phase solid solution
Electronegativity Diff Δχ
0.2891
smaller = more stable mixing
VEC
8.333
valence electron concentration, affects phase stability
Mix Enthalpy ΔH_mix
-4.551
kJ/mol; negative = exothermic mixing
Entropy Norm
0.9190
SS Former
0
Phase Tendency
IM

Traditional Material Features

ROM Blended-Feature Radar
Rating & Classification
Tier
A
Score
0.660
Family
Cu-based Alloy
Matrix Element
Cu · 0.533

Related Tasks

Related computation task IDs (3)

Citation & References

Materials Project Page
https://materialsproject.org/materials/mp-11638
Reference Citation

The crystal structure and related material properties of Eu3(Cu2Sn)4 were obtained from the Materials Project database (MP-ID: mp-11638, 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_Eu3(Cu2Sn)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.23556979
_cell_length_b   9.23556979
_cell_length_c   7.82759800
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   119.99999852
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Eu3(Cu2Sn)4
_chemical_formula_sum   'Eu6 Cu16 Sn8'
_cell_volume   578.21125500
_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
  Eu  Eu0  1  0.52533700  0.47466300  0.50141000  1.0
  Eu  Eu1  1  0.05067400  0.52533700  0.00141000  1.0
  Eu  Eu2  1  0.47466300  0.94932600  0.00141000  1.0
  Eu  Eu3  1  0.52533700  0.05067400  0.50141000  1.0
  Eu  Eu4  1  0.94932600  0.47466300  0.50141000  1.0
  Eu  Eu5  1  0.47466300  0.52533700  0.00141000  1.0
  Cu  Cu6  1  0.89992900  0.79985800  0.52182800  1.0
  Cu  Cu7  1  0.00000000  0.00000000  0.77427100  1.0
  Cu  Cu8  1  0.00000000  0.00000000  0.27427100  1.0
  Cu  Cu9  1  0.66666700  0.33333300  0.17183300  1.0
  Cu  Cu10  1  0.33333300  0.66666700  0.67183300  1.0
  Cu  Cu11  1  0.10007100  0.89992900  0.02182800  1.0
  Cu  Cu12  1  0.83744400  0.16255600  0.82766800  1.0
  Cu  Cu13  1  0.67488800  0.83744400  0.32766800  1.0
  Cu  Cu14  1  0.16255600  0.32511200  0.32766800  1.0
  Cu  Cu15  1  0.83744400  0.67488800  0.82766800  1.0
  Cu  Cu16  1  0.32511200  0.16255600  0.82766800  1.0
  Cu  Cu17  1  0.20014200  0.10007100  0.52182800  1.0
  Cu  Cu18  1  0.89992900  0.10007100  0.52182800  1.0
  Cu  Cu19  1  0.79985800  0.89992900  0.02182800  1.0
  Cu  Cu20  1  0.10007100  0.20014200  0.02182800  1.0
  Cu  Cu21  1  0.16255600  0.83744400  0.32766800  1.0
  Sn  Sn22  1  0.66453800  0.83226900  0.70590300  1.0
  Sn  Sn23  1  0.16773100  0.33546200  0.70590300  1.0
  Sn  Sn24  1  0.83226900  0.66453800  0.20590300  1.0
  Sn  Sn25  1  0.33546200  0.16773100  0.20590300  1.0
  Sn  Sn26  1  0.16773100  0.83226900  0.70590300  1.0
  Sn  Sn27  1  0.33333300  0.66666700  0.31617700  1.0
  Sn  Sn28  1  0.83226900  0.16773100  0.20590300  1.0
  Sn  Sn29  1  0.66666700  0.33333300  0.81617700  1.0
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