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Cr2CoSe4

High-Entropy Materials HEA Traditional Materials TRA

MP-ID: mp-676073 · Space group: P-1 (#2)

Basic Information

Formula
Cr2CoSe4
MP-ID
mp-676073
Elements
3
Sites
7
Density
5.7130
g/cm³
Volume
139.16
ų
Cell a
5.1000
Å
Cell b
6.4443
Å
Cell c
6.8973
Å
α Angle
136.67
°
β Angle
116.37
°
γ Angle
69.11
°
Space Group
P-1
Point Group
-1
Crystal System
Triclinic
Bravais Lattice
Triclinic P
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
15.86 5.5871 25.5 (0,1,-1)
19.20 4.6231 63.4 (1,1,-1)
19.46 4.5625 11.2 (1,0,0)
20.11 4.4154 16.0 (0,1,0)
23.34 3.8112 11.1 (1,0,-1)
27.33 3.2629 31.1 (1,1,0)
27.79 3.2104 100.0 (1,1,-2)
28.90 3.0900 3.7 (1,-1,0)
29.57 3.0205 11.2 (1,2,-2)
29.65 3.0130 11.5 (0,1,-2)
30.09 2.9701 29.0 (1,-1,1)
30.71 2.9115 6.2 (0,2,-1)
31.58 2.8329 3.3 (1,0,1)
31.93 2.8026 30.4 (1,2,-1)
32.04 2.7936 78.7 (0,2,-2)
35.64 2.5188 55.5 (2,1,-1)
36.83 2.4403 88.0 (0,1,1)
38.18 2.3572 2.0 (2,1,-2)
38.74 2.3245 68.1 (2,0,-1)
38.95 2.3123 4.8 (1,0,-2)
38.96 2.3116 8.5 (2,2,-2)
39.50 2.2813 18.2 (2,0,0)
39.64 2.2734 27.0 (1,-1,-1)
39.78 2.2660 13.1 (0,0,2)
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Energy Properties

Formation Energy/atom
-0.48070
eV/atom
Energy/atom
-6.25544
eV/atom
Energy above Hull
0.2423
eV/atom
Uncorrected Energy
-5.9857
eV/atom
Volume/atom
19.88
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
6.0265
μB
Mag. Ordering
FM
Mag. Sites
3
Magnetization/Volume
0.043310
μB/ų

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)
Composition Info
Major / Matrix Element
Se · 0.571
Element Family
Metalloid-Nonmetal
Solute Fraction
0.429
Interstitial Fraction
0.000

High-Entropy Alloy Features

Composite Radar (normalized)
Element-Class Share
Mix Entropy ΔS/R
0.9557
HEA criterion (>1.0 = high entropy)
Mix Entropy ΔS
7.9457
J/mol·K
Ω Parameter
14.0857
Ω > 1.1 favors solid solution
Atomic Size Mismatch δr
5.003%
δr < 6.6% favors single-phase solid solution
Electronegativity Diff Δχ
0.4098
smaller = more stable mixing
VEC
5.286
valence electron concentration, affects phase stability
Mix Enthalpy ΔH_mix
-0.653
kJ/mol; negative = exothermic mixing
Entropy Norm
0.8699
SS Former
1
Phase Tendency
SS

Traditional Material Features

ROM Blended-Feature Radar
Rating & Classification
Tier
C
Score
0.401
Family
Se-rich Multi-Component
Matrix Element
Se · 0.571

Related Tasks

Related computation task IDs (1)

Citation & References

Materials Project Page
https://materialsproject.org/materials/mp-676073
Reference Citation

The crystal structure and related material properties of Cr2CoSe4 were obtained from the Materials Project database (MP-ID: mp-676073, 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_Cr2CoSe4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.10000198
_cell_length_b   6.44424825
_cell_length_c   6.89730745
_cell_angle_alpha   136.67044834
_cell_angle_beta   116.37023163
_cell_angle_gamma   69.11022569
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Cr2CoSe4
_chemical_formula_sum   'Cr2 Co1 Se4'
_cell_volume   139.15678594
_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
  Cr  Cr0  1  0.64051700  0.61244200  0.37671200  1.0
  Cr  Cr1  1  0.35948300  0.38755800  0.62328800  1.0
  Co  Co2  1  0.00000000  0.00000000  0.00000000  1.0
  Se  Se3  1  0.51419200  0.13093400  0.82358000  1.0
  Se  Se4  1  0.86881000  0.50252200  0.69911200  1.0
  Se  Se5  1  0.13119000  0.49747800  0.30088800  1.0
  Se  Se6  1  0.48580800  0.86906600  0.17642000  1.0
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