Mg6CrGa

高熵材料 HEA 传统材料 TRA

MP-ID: mp-1016636 · Space group: Amm2 (#38)

Materials Project API

Basic Information

Formula

Mg6CrGa

MP-ID

mp-1016636

Elements

Sites

Density

2.7037

g/cm³

Volume

328.64

Å³

Cell a

4.9345

Cell b

6.2184

Cell c

10.7104

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
16.48	5.3777	33.7	(0,1,1)
16.55	5.3552	8.2	(0,0,2)
24.48	3.6358	7.2	(1,1,1)
24.53	3.6288	10.5	(1,0,2)
28.71	3.1092	5.4	(0,2,0)
33.32	2.6889	26.5	(0,2,2)
33.47	2.6776	11.0	(0,0,4)
34.19	2.6226	13.2	(1,1,3)
36.42	2.4672	38.8	(2,0,0)
38.11	2.3611	100.0	(1,2,2)
38.24	2.3534	52.1	(1,0,4)
40.21	2.2425	7.1	(2,1,1)
40.25	2.2408	1.8	(2,0,2)
44.52	2.0351	2.2	(0,3,1)
44.75	2.0253	1.7	(0,1,5)
47.02	1.9327	2.6	(2,2,0)
48.38	1.8813	1.8	(1,3,1)
48.51	1.8765	4.7	(1,2,4)
48.59	1.8736	2.7	(1,1,5)
50.18	1.8179	15.9	(2,2,2)
50.29	1.8144	6.7	(2,0,4)
54.46	1.6849	3.2	(1,3,3)
58.82	1.5699	1.8	(2,3,1)
59.01	1.5654	1.4	(2,1,5)

Get direct link

Energy Properties

Formation Energy/atom

0.11430

eV/atom

Energy/atom

-2.69370

eV/atom

Energy above Hull

0.1612

eV/atom

Uncorrected Energy

-2.6937

eV/atom

Volume/atom

20.54

Å³

c/a Ratio

2.1705

Electronic Properties

Metallic

Metal

Band Gap

Direct Gap

CBM

N/A

Magnetic Properties

Magnetic

Yes

Total Mag. Moment

8.0438

μB

Mag. Ordering

Mag. Sites

Magnetization/Volume

0.024480

μB/Å³

Elastic Properties

Elastic data not available

Feature Analysis

Element Composition (atomic fraction)

Composition Info

Major / Matrix Element

Mg · 0.750

Element Family

Alkali-AlkEarth

Solute Fraction

0.250

Interstitial Fraction

0.000

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

0.7819

Ω > 1.1 favors solid solution

Atomic Size Mismatch δr

8.153%

δr < 6.6% favors single-phase solid solution

Electronegativity Diff Δχ

0.1878

smaller = more stable mixing

VEC

2.625

valence electron concentration, affects phase stability

Mix Enthalpy ΔH_mix

-7.842

kJ/mol; negative = exothermic mixing

Entropy Norm

0.6696

SS Former

Phase Tendency

Related Tasks

Related computation task IDs (1)

aaacfwae

Citation & References

Materials Project Page

https://materialsproject.org/materials/mp-1016636

Reference Citation

The crystal structure and related material properties of Mg6CrGa were obtained from the Materials Project database (MP-ID: mp-1016636, 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…

Style: Ball & Stick | Drag to rotate · Scroll to zoom · Right-click to pan

Raw CIF Data

# generated using pymatgen
data_Mg6CrGa
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.93446500
_cell_length_b   6.21843400
_cell_length_c   10.71034600
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   90.00000000
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Mg6CrGa
_chemical_formula_sum   'Mg12 Cr2 Ga2'
_cell_volume   328.64316406
_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  0.00000000  0.25436600  0.08461600  1.0
  Mg  Mg1  1  0.00000000  0.74563400  0.08461600  1.0
  Mg  Mg2  1  0.00000000  0.50000000  0.83393700  1.0
  Mg  Mg3  1  0.50000000  0.24464000  0.91361000  1.0
  Mg  Mg4  1  0.50000000  0.75536000  0.91361000  1.0
  Mg  Mg5  1  0.50000000  0.50000000  0.66771700  1.0
  Mg  Mg6  1  0.00000000  0.75436600  0.58461600  1.0
  Mg  Mg7  1  0.00000000  0.24563400  0.58461600  1.0
  Mg  Mg8  1  0.00000000  0.00000000  0.33393700  1.0
  Mg  Mg9  1  0.50000000  0.74464000  0.41361000  1.0
  Mg  Mg10  1  0.50000000  0.25536000  0.41361000  1.0
  Mg  Mg11  1  0.50000000  0.00000000  0.16771700  1.0
  Cr  Cr12  1  0.00000000  0.50000000  0.32986700  1.0
  Cr  Cr13  1  0.00000000  0.00000000  0.82986700  1.0
  Ga  Ga14  1  0.50000000  0.50000000  0.17202800  1.0
  Ga  Ga15  1  0.50000000  0.00000000  0.67202800  1.0

Get direct link