Mg6CdCo

高熵材料 HEA 传统材料 TRA

MP-ID: mp-1022038 · Space group: Amm2 (#38)

Materials Project API

Basic Information

Formula

Mg6CdCo

MP-ID

mp-1022038

Elements

Sites

Density

3.3105

g/cm³

Volume

318.19

Å³

Cell a

4.8960

Cell b

6.1577

Cell c

10.5541

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
16.67	5.3187	58.0	(0,1,1)
16.80	5.2770	11.9	(0,0,2)
18.12	4.8960	5.2	(1,0,0)
24.72	3.6022	23.8	(1,1,1)
24.81	3.5892	25.4	(1,0,2)
29.00	3.0789	10.1	(0,2,0)
29.24	3.0547	3.7	(0,1,3)
33.70	2.6593	21.8	(0,2,2)
33.98	2.6385	15.2	(0,0,4)
34.41	2.6064	2.3	(1,2,0)
34.61	2.5916	24.2	(1,1,3)
36.71	2.4480	36.7	(2,0,0)
38.52	2.3369	100.0	(1,2,2)
38.77	2.3227	42.4	(1,0,4)
40.57	2.2238	12.4	(2,1,1)
40.63	2.2207	2.6	(2,0,2)
44.99	2.0148	4.0	(0,3,1)
45.26	2.0035	3.1	(0,2,4)
45.42	1.9968	5.6	(0,1,5)
47.45	1.9161	5.0	(2,2,0)
47.60	1.9103	1.9	(2,1,3)
48.88	1.8632	4.4	(1,3,1)
49.13	1.8542	6.4	(1,2,4)
49.29	1.8489	2.2	(1,1,5)

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Energy Properties

Formation Energy/atom

0.11932

eV/atom

Energy/atom

-2.11521

eV/atom

Energy above Hull

0.1460

eV/atom

Uncorrected Energy

-2.1152

eV/atom

Volume/atom

19.89

Å³

c/a Ratio

2.1557

Electronic Properties

Metallic

Metal

Band Gap

Direct Gap

CBM

N/A

Magnetic Properties

Magnetic

Yes

Total Mag. Moment

2.2904

μB

Mag. Ordering

Mag. Sites

Magnetization/Volume

0.007200

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

0.3422

Ω > 1.1 favors solid solution

Atomic Size Mismatch δr

7.464%

δr < 6.6% favors single-phase solid solution

Electronegativity Diff Δχ

0.2111

smaller = more stable mixing

VEC

4.125

valence electron concentration, affects phase stability

Mix Enthalpy ΔH_mix

-17.650

kJ/mol; negative = exothermic mixing

Entropy Norm

0.6696

SS Former

Phase Tendency

Related Tasks

Related computation task IDs (1)

aaacgefm

Citation & References

Materials Project Page

https://materialsproject.org/materials/mp-1022038

Reference Citation

The crystal structure and related material properties of Mg6CdCo were obtained from the Materials Project database (MP-ID: mp-1022038, 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_Mg6CdCo
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.89600600
_cell_length_b   6.15772200
_cell_length_c   10.55408300
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   90.00000000
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Mg6CdCo
_chemical_formula_sum   'Mg12 Cd2 Co2'
_cell_volume   318.18706799
_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  0.25027700  0.08376500  1.0
  Mg  Mg1  1  0.00000000  0.74972300  0.08376500  1.0
  Mg  Mg2  1  0.00000000  0.50000000  0.83415500  1.0
  Mg  Mg3  1  0.50000000  0.23575000  0.90884000  1.0
  Mg  Mg4  1  0.50000000  0.76425000  0.90884000  1.0
  Mg  Mg5  1  0.50000000  0.50000000  0.66639000  1.0
  Mg  Mg6  1  0.00000000  0.75027700  0.58376500  1.0
  Mg  Mg7  1  0.00000000  0.24972300  0.58376500  1.0
  Mg  Mg8  1  0.00000000  0.00000000  0.33415500  1.0
  Mg  Mg9  1  0.50000000  0.73575000  0.40884000  1.0
  Mg  Mg10  1  0.50000000  0.26425000  0.40884000  1.0
  Mg  Mg11  1  0.50000000  0.00000000  0.16639000  1.0
  Cd  Cd12  1  0.50000000  0.50000000  0.16898400  1.0
  Cd  Cd13  1  0.50000000  0.00000000  0.66898400  1.0
  Co  Co14  1  0.00000000  0.50000000  0.34526100  1.0
  Co  Co15  1  0.00000000  0.00000000  0.84526100  1.0

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