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MnCoSi

High-Entropy Materials HEA Traditional Materials TRA Elasticity Data ELA

MP-ID: mp-961696 · Space group: F-43m (#216)

Basic Information

Formula
MnCoSi
MP-ID
mp-961696
Elements
3
Sites
3
Density
6.0435
g/cm³
Volume
39.00
ų
Cell a
3.8067
Å
Cell b
3.8067
Å
Cell c
3.8067
Å
α Angle
60.00
°
β Angle
60.00
°
γ Angle
60.00
°
Space Group
F-43m
Point Group
-43m
Crystal System
Cubic
Bravais Lattice
Cubic F
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 8)
2θd (Å)Ihkl
28.72 3.1081 62.4 (1,1,1)
33.29 2.6917 3.5 (1,1,0)
47.79 1.9033 100.0 (2,1,1)
56.71 1.6232 24.5 (2,2,1)
69.89 1.3459 14.7 (2,2,0)
77.25 1.2350 8.9 (3,2,2)
79.65 1.2038 1.0 (3,2,1)
89.10 1.0989 30.3 (3,3,2)
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Energy Properties

Formation Energy/atom
-0.17797
eV/atom
Energy/atom
-7.41822
eV/atom
Energy above Hull
0.2575
eV/atom
Uncorrected Energy
-7.4419
eV/atom
Volume/atom
13.00
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
2.0038
μB
Mag. Ordering
FM
Mag. Sites
1
Magnetization/Volume
0.051370
μB/ų

Elastic Properties

KVRH
181.264
GPa
GVRH
72.168
GPa
Young's Modulus E
191.138
GPa
Poisson Ratio ν
0.324
Pugh Ratio K/G
2.512
Vickers Hardness Est.
5.321
GPa
Ductility
Brittle
Anisotropy
0.149
Lame λ
133.152
GPa

Feature Analysis

Composition Overview

Element Composition (atomic fraction)
Composition Info
Major / Matrix Element
Mn · 0.333
Element Family
3d-TM
Solute Fraction
0.667
Interstitial Fraction
0.333

High-Entropy Alloy Features

Composite Radar (normalized)
Element-Class Share
Mix Entropy ΔS/R
1.0986
HEA criterion (>1.0 = high entropy)
Mix Entropy ΔS
9.1339
J/mol·K
Ω Parameter
0.4543
Ω > 1.1 favors solid solution
Atomic Size Mismatch δr
3.513%
δr < 6.6% favors single-phase solid solution
Electronegativity Diff Δχ
0.1605
smaller = more stable mixing
VEC
6.667
valence electron concentration, affects phase stability
Mix Enthalpy ΔH_mix
-33.333
kJ/mol; negative = exothermic mixing
Entropy Norm
1.0000
SS Former
0
Phase Tendency
IM

Traditional Material Features

ROM Blended-Feature Radar
Rating & Classification
Tier
C
Score
0.423
Family
Mn-rich Multi-Component
Matrix Element
Mn · 0.333

Elasticity Features

Elastic Modulus Comparison (GPa)
Elastic Features
Elastic Anisotropy AU
0.1490
Homogeneous Poisson ν
0.3240
Debye Temperature
490.1
K
Sound Velocity
3,872.0
m/s
Homogeneity
0.3240

Related Tasks

Citation & References

Materials Project Page
https://materialsproject.org/materials/mp-961696
Reference Citation

The crystal structure and related material properties of MnCoSi were obtained from the Materials Project database (MP-ID: mp-961696, 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_MnCoSi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.80666127
_cell_length_b   3.80666127
_cell_length_c   3.80666127
_cell_angle_alpha   60.00000000
_cell_angle_beta   60.00000000
_cell_angle_gamma   60.00000000
_symmetry_Int_Tables_number   1
_chemical_formula_structural   MnCoSi
_chemical_formula_sum   'Mn1 Co1 Si1'
_cell_volume   39.00476842
_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
  Mn  Mn0  1  0.00000000  0.00000000  0.00000000  1.0
  Co  Co1  1  0.75000000  0.75000000  0.75000000  1.0
  Si  Si2  1  0.50000000  0.50000000  0.50000000  1.0
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