Navigation

HEAS Data Platform · Materials Science Database

Cu5Sn2Se7

High-Entropy Materials HEA Traditional Materials TRA

MP-ID: mp-1103757 · Space group: C2 (#5)

Basic Information

Formula
Cu5Sn2Se7
MP-ID
mp-1103757
Elements
3
Sites
14
Density
5.7836
g/cm³
Volume
318.08
ų
Cell a
6.9395
Å
Cell b
6.9395
Å
Cell c
8.9624
Å
α Angle
82.64
°
β Angle
82.64
°
γ Angle
48.10
°
Space Group
C2
Point Group
2
Crystal System
Monoclinic
Bravais Lattice
Monoclinic C
Stability
Yes
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
17.20 5.1569 1.2 (1,0,0)
25.72 3.4635 1.6 (1,0,2)
27.26 3.2713 100.0 (1,0,-2)
27.28 3.2695 96.5 (2,1,1)
28.82 3.0975 1.7 (2,2,1)
29.44 3.0335 2.5 (2,1,-1)
34.06 2.6321 1.1 (1,0,3)
35.70 2.5152 2.1 (2,0,1)
37.72 2.3849 1.3 (1,-1,2)
38.18 2.3569 2.1 (2,1,3)
39.27 2.2940 1.1 (3,2,0)
45.23 2.0050 23.9 (1,1,-4)
45.27 2.0033 23.7 (3,3,2)
45.29 2.0024 47.0 (3,1,-1)
45.31 2.0017 47.0 (2,0,3)
48.84 1.8646 1.5 (2,-1,0)
53.61 1.7097 13.8 (3,2,-3)
53.63 1.7089 14.2 (4,3,0)
53.64 1.7087 13.8 (1,0,5)
53.66 1.7080 14.2 (3,2,4)
53.72 1.7063 13.1 (2,-1,-2)
53.73 1.7061 14.4 (3,0,1)
65.89 1.4177 7.2 (4,4,-2)
65.94 1.4166 7.2 (2,2,6)
Get direct link

Energy Properties

Formation Energy/atom
-0.34750
eV/atom
Energy/atom
-14.91231
eV/atom
Energy above Hull
0.0000
eV/atom
Uncorrected Energy
-14.9123
eV/atom
Volume/atom
22.72
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
0.0000
μB
Mag. Ordering
Unknown
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
Se · 0.500
Element Family
Metalloid-Nonmetal
Solute Fraction
0.500
Interstitial Fraction
0.000

High-Entropy Alloy Features

Composite Radar (normalized)
Element-Class Share
Mix Entropy ΔS/R
0.9923
HEA criterion (>1.0 = high entropy)
Mix Entropy ΔS
8.2498
J/mol·K
Ω Parameter
4.0634
Ω > 1.1 favors solid solution
Atomic Size Mismatch δr
9.806%
δr < 6.6% favors single-phase solid solution
Electronegativity Diff Δχ
0.3170
smaller = more stable mixing
VEC
6.500
valence electron concentration, affects phase stability
Mix Enthalpy ΔH_mix
-1.633
kJ/mol; negative = exothermic mixing
Entropy Norm
0.9032
SS Former
0
Phase Tendency
IM

Traditional Material Features

ROM Blended-Feature Radar
Rating & Classification
Tier
B
Score
0.524
Family
Se-rich Multi-Component
Matrix Element
Se · 0.500

Related Tasks

Citation & References

Materials Project Page
https://materialsproject.org/materials/mp-1103757
Reference Citation

The crystal structure and related material properties of Cu5Sn2Se7 were obtained from the Materials Project database (MP-ID: mp-1103757, 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_Cu5Sn2Se7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.93945807
_cell_length_b   6.93945807
_cell_length_c   8.96235613
_cell_angle_alpha   82.63708378
_cell_angle_beta   82.63708378
_cell_angle_gamma   48.10419451
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Cu5Sn2Se7
_chemical_formula_sum   'Cu5 Sn2 Se7'
_cell_volume   318.08062551
_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
  Cu  Cu0  1  0.73168722  0.26831278  0.50000000  1.0
  Cu  Cu1  1  0.88694536  0.40476037  0.07428065  1.0
  Cu  Cu2  1  0.59523963  0.11305464  0.92571935  1.0
  Cu  Cu3  1  0.44757209  0.97797621  0.35715838  1.0
  Cu  Cu4  1  0.02202379  0.55242791  0.64284162  1.0
  Sn  Sn5  1  0.14863693  0.70168388  0.22439950  1.0
  Sn  Sn6  1  0.29831612  0.85136307  0.77560050  1.0
  Se  Se7  1  0.35304719  0.35080578  0.44171322  1.0
  Se  Se8  1  0.64919422  0.64695281  0.55828678  1.0
  Se  Se9  1  0.51085024  0.48914976  0.00000000  1.0
  Se  Se10  1  0.04856060  0.11140837  0.29131929  1.0
  Se  Se11  1  0.88859163  0.95143940  0.70868071  1.0
  Se  Se12  1  0.74499403  0.80805907  0.13902035  1.0
  Se  Se13  1  0.19194093  0.25500597  0.86097965  1.0
Get direct link