Mg14CoSn

High-Entropy Materials HEA Traditional Materials TRA

MP-ID: mp-1027892 · Space group: Amm2 (#38)

Materials Project API

Basic Information

Formula

Mg14CoSn

MP-ID

mp-1027892

Elements

Sites

Density

2.4899

g/cm³

Volume

345.41

Å³

Cell a

6.2737

Cell b

6.2804

Cell c

10.1262

α Angle

90.00

β Angle

90.00

γ Angle

120.04

Space Group

Amm2

Point Group

mm2

Crystal System

Orthorhombic

Bravais Lattice

Stability

Packing Fraction

X-ray Diffraction

Diffraction Pattern

Target / Radiation

X-axis: 2θ (°); Y-axis: relative intensity; Cu Kα ; λ=1.5418 Å

Diffraction Peaks (Top 24)

2θ	d (Å)	I	hkl
8.73	10.1262	100.0	(0,0,0,1)
16.30	5.4371	3.3	(1,-1,0,0)
16.30	5.4371	3.3	(0,1,-1,0)
16.32	5.4312	24.9	(1,0,-1,0)
17.52	5.0631	19.8	(0,0,0,2)
18.52	4.7902	11.5	(1,-1,0,1)
18.54	4.7862	35.7	(1,0,-1,1)
24.02	3.7053	8.8	(1,-1,0,2)
24.03	3.7035	16.9	(1,0,-1,2)
26.41	3.3754	4.3	(0,0,0,3)
28.42	3.1402	6.2	(1,-2,1,0)
28.45	3.1368	2.3	(2,-1,-1,0)
29.79	2.9993	9.9	(1,-2,1,1)
29.82	2.9964	5.0	(2,-1,-1,1)
31.19	2.8677	5.3	(1,-1,0,3)
31.20	2.8669	8.5	(1,0,-1,3)
32.95	2.7185	43.2	(2,-2,0,0)
32.98	2.7156	19.9	(2,0,-2,0)
33.58	2.6686	7.8	(1,-2,1,2)
33.61	2.6665	3.3	(2,-1,-1,2)
34.15	2.6256	7.2	(2,-2,0,1)
34.15	2.6256	7.2	(0,2,-2,1)
34.19	2.6229	7.0	(2,0,-2,1)
35.46	2.5316	57.0	(0,0,0,4)

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Energy Properties

Formation Energy/atom

0.06720

eV/atom

Energy/atom

-2.05590

eV/atom

Energy above Hull

0.0991

eV/atom

Uncorrected Energy

-2.0559

eV/atom

Volume/atom

21.59

Å³

c/a Ratio

1.6141

Electronic Properties

Metallic

Metal

Band Gap

Direct Gap

CBM

N/A

Magnetic Properties

Magnetic

Yes

Total Mag. Moment

0.0430

μB

Mag. Ordering

Mag. Sites

Magnetization/Volume

0.000120

μB/Å³

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)

Composition Info

Major / Matrix Element

Mg · 0.875

Element Family

Alkali-AlkEarth

Solute Fraction

0.125

Interstitial Fraction

0.000

High-Entropy Alloy Features

Composite Radar (normalized)

Element-Class Share

Mix Entropy ΔS/R

0.4634

HEA criterion (>1.0 = high entropy)

Mix Entropy ΔS

3.8528

J/mol·K

Ω Parameter

0.3703

Ω > 1.1 favors solid solution

Atomic Size Mismatch δr

5.473%

δr < 6.6% favors single-phase solid solution

Electronegativity Diff Δχ

0.2022

smaller = more stable mixing

VEC

2.563

valence electron concentration, affects phase stability

Mix Enthalpy ΔH_mix

-9.881

kJ/mol; negative = exothermic mixing

Entropy Norm

0.4218

SS Former

Phase Tendency

Traditional Material Features

ROM Blended-Feature Radar

Rating & Classification

Tier

Score

0.796

Family

Mg-based Alloy

Matrix Element

Mg · 0.875

Related Tasks

Related computation task IDs (1)

aaacgmoi

Citation & References

Materials Project Page

https://materialsproject.org/materials/mp-1027892

Reference Citation

The crystal structure and related material properties of Mg14CoSn were obtained from the Materials Project database (MP-ID: mp-1027892, 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

3D Crystal Structure Rendering

Loading 3D structure…

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Raw CIF Data

# generated using pymatgen
data_Mg14CoSn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.27365734
_cell_length_b   6.28041744
_cell_length_c   10.12618764
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   120.03565625
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Mg14CoSn
_chemical_formula_sum   'Mg14 Co1 Sn1'
_cell_volume   345.40590331
_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
  Mg  Mg0  1  0.16663896  0.33331898  0.62500000  1.0
  Mg  Mg1  1  0.16944488  0.83472194  0.62500000  1.0
  Mg  Mg2  1  0.67181943  0.33715490  0.12500000  1.0
  Mg  Mg3  1  0.66581510  0.33046105  0.62500000  1.0
  Mg  Mg4  1  0.67181943  0.83466353  0.12500000  1.0
  Mg  Mg5  1  0.66581510  0.83535305  0.62500000  1.0
  Mg  Mg6  1  0.32807251  0.17272234  0.36242217  1.0
  Mg  Mg7  1  0.32807251  0.17272234  0.88757783  1.0
  Mg  Mg8  1  0.32807251  0.65535116  0.36242217  1.0
  Mg  Mg9  1  0.32807251  0.65535116  0.88757783  1.0
  Mg  Mg10  1  0.84474454  0.17237277  0.36462739  1.0
  Mg  Mg11  1  0.84474454  0.17237277  0.88537261  1.0
  Mg  Mg12  1  0.83295662  0.66647881  0.37917127  1.0
  Mg  Mg13  1  0.83295662  0.66647881  0.87082873  1.0
  Co  Co14  1  0.16223657  0.33111778  0.12500000  1.0
  Sn  Sn15  1  0.15871820  0.82935860  0.12500000  1.0

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