Mg6ZnCr

High-Entropy Materials HEA Traditional Materials TRA

MP-ID: mp-1022591 · Space group: Amm2 (#38)

Materials Project API

Basic Information

Formula

Mg6ZnCr

MP-ID

mp-1022591

Elements

Sites

Density

2.6594

g/cm³

Volume

328.74

Å³

Cell a

4.9663

Cell b

6.1678

Cell c

10.7321

α Angle

90.00

β Angle

90.00

γ Angle

90.00

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
16.52	5.3660	20.6	(0,0,2)
16.58	5.3476	1.5	(0,1,1)
17.86	4.9663	15.6	(1,0,0)
24.42	3.6448	13.6	(1,0,2)
24.46	3.6390	1.6	(1,1,1)
28.95	3.0839	4.9	(0,2,0)
33.40	2.6830	14.5	(0,0,4)
33.52	2.6738	28.6	(0,2,2)
34.23	2.6199	6.2	(1,2,0)
36.17	2.4832	38.2	(2,0,0)
38.12	2.3606	50.3	(1,0,4)
38.23	2.3543	100.0	(1,2,2)
40.01	2.2536	4.4	(2,0,2)
44.77	2.0242	2.3	(0,2,4)
46.98	1.9341	2.4	(2,2,0)
48.57	1.8745	5.3	(1,2,4)
50.05	1.8224	8.7	(2,0,4)
50.14	1.8195	17.2	(2,2,2)
54.53	1.6829	1.5	(1,0,6)
58.33	1.5819	1.1	(3,0,2)
58.86	1.5689	1.8	(2,2,4)
59.77	1.5473	16.2	(0,2,6)
60.00	1.5420	8.1	(0,4,0)
62.69	1.4820	1.0	(0,4,2)

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Energy Properties

Formation Energy/atom

0.14919

eV/atom

Energy/atom

-2.43776

eV/atom

Energy above Hull

0.1758

eV/atom

Uncorrected Energy

-2.4378

eV/atom

Volume/atom

20.55

Å³

c/a Ratio

2.1610

Electronic Properties

Metallic

Metal

Band Gap

Direct Gap

CBM

N/A

Magnetic Properties

Magnetic

Yes

Total Mag. Moment

8.4160

μB

Mag. Ordering

Mag. Sites

Magnetization/Volume

0.025600

μB/Å³

Elastic Properties

Elastic data not available

Feature Analysis

Composition Overview

Element Composition (atomic fraction)

Composition Info

Major / Matrix Element

Mg · 0.750

Element Family

Alkali-AlkEarth

Solute Fraction

0.250

Interstitial Fraction

0.000

High-Entropy Alloy Features

Composite Radar (normalized)

Element-Class Share

Mix Entropy ΔS/R

0.7356

HEA criterion (>1.0 = high entropy)

Mix Entropy ΔS

6.1160

J/mol·K

Ω Parameter

1.1343

Ω > 1.1 favors solid solution

Atomic Size Mismatch δr

8.279%

δr < 6.6% favors single-phase solid solution

Electronegativity Diff Δχ

0.1494

smaller = more stable mixing

VEC

3.750

valence electron concentration, affects phase stability

Mix Enthalpy ΔH_mix

-5.669

kJ/mol; negative = exothermic mixing

Entropy Norm

0.6696

SS Former

Phase Tendency

Traditional Material Features

ROM Blended-Feature Radar

Rating & Classification

Tier

Score

0.711

Family

Mg-based Alloy

Matrix Element

Mg · 0.750

Related Tasks

Related computation task IDs (1)

aaacgezy

Citation & References

Materials Project Page

https://materialsproject.org/materials/mp-1022591

Reference Citation

The crystal structure and related material properties of Mg6ZnCr were obtained from the Materials Project database (MP-ID: mp-1022591, 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_Mg6ZnCr
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.96631000
_cell_length_b   6.16779200
_cell_length_c   10.73205900
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   90.00000000
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Mg6ZnCr
_chemical_formula_sum   'Mg12 Zn2 Cr2'
_cell_volume   328.73549242
_cell_formula_units_Z   2
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  0.50000000  0.25183100  0.41686400  1.0
  Mg  Mg1  1  0.50000000  0.74816900  0.41686400  1.0
  Mg  Mg2  1  0.00000000  0.74813000  0.08660500  1.0
  Mg  Mg3  1  0.00000000  0.25187000  0.08660500  1.0
  Mg  Mg4  1  0.00000000  0.00000000  0.33054700  1.0
  Mg  Mg5  1  0.00000000  0.50000000  0.32939000  1.0
  Mg  Mg6  1  0.50000000  0.75183100  0.91686400  1.0
  Mg  Mg7  1  0.50000000  0.24816900  0.91686400  1.0
  Mg  Mg8  1  0.00000000  0.24813000  0.58660500  1.0
  Mg  Mg9  1  0.00000000  0.75187000  0.58660500  1.0
  Mg  Mg10  1  0.00000000  0.50000000  0.83054700  1.0
  Mg  Mg11  1  0.00000000  0.00000000  0.82939000  1.0
  Zn  Zn12  1  0.50000000  0.00000000  0.16584400  1.0
  Zn  Zn13  1  0.50000000  0.50000000  0.66584400  1.0
  Cr  Cr14  1  0.50000000  0.50000000  0.16727800  1.0
  Cr  Cr15  1  0.50000000  0.00000000  0.66727800  1.0

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