Mg6CrCd

高熵材料 HEA 传统材料 TRA

MP-ID: mp-1016619 · Space group: Amm2 (#38)

Materials Project API

Basic Information

Formula

Mg6CrCd

MP-ID

mp-1016619

Elements

Sites

Density

3.0121

g/cm³

Volume

342.06

Å³

Cell a

5.0073

Cell b

6.2710

Cell c

10.8934

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
16.27	5.4467	35.5	(0,0,2)
16.31	5.4348	15.8	(0,1,1)
17.71	5.0073	28.2	(1,0,0)
24.14	3.6863	26.2	(1,0,2)
24.17	3.6826	15.2	(1,1,1)
28.40	3.1424	4.7	(0,1,3)
28.47	3.1355	9.0	(0,2,0)
32.89	2.7234	16.4	(0,0,4)
32.96	2.7174	32.3	(0,2,2)
33.67	2.6617	6.2	(1,1,3)
33.73	2.6575	11.4	(1,2,0)
35.87	2.5036	36.7	(2,0,0)
37.60	2.3924	50.1	(1,0,4)
37.66	2.3884	100.0	(1,2,2)
39.62	2.2748	7.5	(2,0,2)
39.63	2.2740	3.7	(2,1,1)
44.00	2.0580	1.7	(0,1,5)
44.04	2.0561	4.8	(0,2,4)
44.11	2.0529	1.7	(0,3,1)
46.37	1.9581	2.6	(2,1,3)
46.41	1.9565	4.5	(2,2,0)
47.78	1.9035	2.1	(1,1,5)
47.82	1.9020	8.8	(1,2,4)
47.89	1.8995	2.0	(1,3,1)

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Energy Properties

Formation Energy/atom

0.13062

eV/atom

Energy/atom

-2.41886

eV/atom

Energy above Hull

0.1561

eV/atom

Uncorrected Energy

-2.4189

eV/atom

Volume/atom

21.38

Å³

c/a Ratio

2.1755

Electronic Properties

Metallic

Metal

Band Gap

Direct Gap

CBM

N/A

Magnetic Properties

Magnetic

Yes

Total Mag. Moment

8.4755

μB

Mag. Ordering

Mag. Sites

Magnetization/Volume

0.024780

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

0.6569

Ω > 1.1 favors solid solution

Atomic Size Mismatch δr

6.829%

δr < 6.6% favors single-phase solid solution

Electronegativity Diff Δχ

0.1582

smaller = more stable mixing

VEC

3.750

valence electron concentration, affects phase stability

Mix Enthalpy ΔH_mix

-9.674

kJ/mol; negative = exothermic mixing

Entropy Norm

0.6696

SS Former

Phase Tendency

Related Tasks

Related computation task IDs (1)

aaacfvzx

Citation & References

Materials Project Page

https://materialsproject.org/materials/mp-1016619

Reference Citation

The crystal structure and related material properties of Mg6CrCd were obtained from the Materials Project database (MP-ID: mp-1016619, 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_Mg6CrCd
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.00728500
_cell_length_b   6.27104400
_cell_length_c   10.89341100
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   90.00000000
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Mg6CrCd
_chemical_formula_sum   'Mg12 Cr2 Cd2'
_cell_volume   342.06295910
_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  0.24831500  0.41665200  1.0
  Mg  Mg1  1  0.50000000  0.75168500  0.41665200  1.0
  Mg  Mg2  1  0.00000000  0.75593300  0.08539100  1.0
  Mg  Mg3  1  0.00000000  0.24406700  0.08539100  1.0
  Mg  Mg4  1  0.00000000  0.00000000  0.32921000  1.0
  Mg  Mg5  1  0.00000000  0.50000000  0.33327400  1.0
  Mg  Mg6  1  0.50000000  0.74831500  0.91665200  1.0
  Mg  Mg7  1  0.50000000  0.25168500  0.91665200  1.0
  Mg  Mg8  1  0.00000000  0.25593300  0.58539100  1.0
  Mg  Mg9  1  0.00000000  0.74406700  0.58539100  1.0
  Mg  Mg10  1  0.00000000  0.50000000  0.82921000  1.0
  Mg  Mg11  1  0.00000000  0.00000000  0.83327400  1.0
  Cr  Cr12  1  0.50000000  0.00000000  0.16747800  1.0
  Cr  Cr13  1  0.50000000  0.50000000  0.66747800  1.0
  Cd  Cd14  1  0.50000000  0.50000000  0.16594800  1.0
  Cd  Cd15  1  0.50000000  0.00000000  0.66594800  1.0

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