YMg14Co

High-Entropy Materials HEA Traditional Materials TRA

MP-ID: mp-1028224 · Space group: Amm2 (#38)

Materials Project API

Basic Information

Formula

YMg14Co

MP-ID

mp-1028224

Elements

Sites

Density

2.2702

g/cm³

Volume

357.02

Å³

Cell a

6.4468

Cell b

6.1753

Cell c

10.2160

α Angle

90.00

β Angle

90.00

γ Angle

118.62

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
8.66	10.2160	79.6	(0,0,1)
15.66	5.6593	22.2	(1,0,0)
16.35	5.4209	2.6	(1,-1,0)
17.36	5.1080	16.7	(0,0,2)
17.92	4.9505	28.0	(1,0,1)
18.53	4.7885	2.3	(1,-1,1)
23.46	3.7919	12.3	(1,0,2)
23.94	3.7176	1.6	(1,-1,2)
23.94	3.7176	1.6	(0,1,2)
26.17	3.4053	3.6	(0,0,3)
28.92	3.0876	4.5	(1,-2,0)
29.08	3.0707	4.0	(2,-1,1)
30.24	2.9556	8.6	(1,-2,1)
30.64	2.9178	7.6	(1,0,3)
31.01	2.8836	7.0	(1,-1,3)
31.62	2.8296	14.2	(2,0,0)
32.84	2.7270	4.9	(2,0,1)
32.88	2.7237	3.3	(2,-1,2)
33.05	2.7105	26.8	(2,-2,0)
33.05	2.7105	26.8	(0,2,0)
33.93	2.6424	6.3	(1,-2,2)
34.23	2.6198	5.4	(2,-2,1)
34.23	2.6198	5.4	(0,2,1)
35.14	2.5540	62.8	(0,0,4)

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Energy Properties

Formation Energy/atom

0.07960

eV/atom

Energy/atom

-2.19972

eV/atom

Energy above Hull

0.1005

eV/atom

Uncorrected Energy

-2.1997

eV/atom

Volume/atom

22.31

Å³

c/a Ratio

1.5847

Electronic Properties

Metallic

Metal

Band Gap

Direct Gap

CBM

N/A

Magnetic Properties

Magnetic

Yes

Total Mag. Moment

0.9193

μB

Mag. Ordering

Mag. Sites

Magnetization/Volume

0.002570

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

0.3741

Ω > 1.1 favors solid solution

Atomic Size Mismatch δr

6.308%

δr < 6.6% favors single-phase solid solution

Electronegativity Diff Δχ

0.1411

smaller = more stable mixing

VEC

2.500

valence electron concentration, affects phase stability

Mix Enthalpy ΔH_mix

-10.613

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)

aaacgnbc

Citation & References

Materials Project Page

https://materialsproject.org/materials/mp-1028224

Reference Citation

The crystal structure and related material properties of YMg14Co were obtained from the Materials Project database (MP-ID: mp-1028224, 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

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Raw CIF Data

# generated using pymatgen
data_YMg14Co
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.44677847
_cell_length_b   6.17525382
_cell_length_c   10.21597082
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   118.61626915
_symmetry_Int_Tables_number   1
_chemical_formula_structural   YMg14Co
_chemical_formula_sum   'Y1 Mg14 Co1'
_cell_volume   357.02287331
_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
  Y  Y0  1  0.13716870  0.31858385  0.12500000  1.0
  Mg  Mg1  1  0.16856395  0.33428147  0.62500000  1.0
  Mg  Mg2  1  0.16098418  0.83049159  0.62500000  1.0
  Mg  Mg3  1  0.63251514  0.30469915  0.12500000  1.0
  Mg  Mg4  1  0.66298562  0.33580394  0.62500000  1.0
  Mg  Mg5  1  0.63251514  0.82781499  0.12500000  1.0
  Mg  Mg6  1  0.66298562  0.82718068  0.62500000  1.0
  Mg  Mg7  1  0.33848146  0.16447369  0.37226558  1.0
  Mg  Mg8  1  0.33848146  0.16447369  0.87773442  1.0
  Mg  Mg9  1  0.33848146  0.67400877  0.37226558  1.0
  Mg  Mg10  1  0.33848146  0.67400877  0.87773442  1.0
  Mg  Mg11  1  0.83575972  0.16788036  0.38680718  1.0
  Mg  Mg12  1  0.83575972  0.16788036  0.86319282  1.0
  Mg  Mg13  1  0.86684441  0.68342271  0.34525468  1.0
  Mg  Mg14  1  0.86684441  0.68342271  0.90474532  1.0
  Co  Co15  1  0.18314754  0.84157327  0.12500000  1.0

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