Mg6SbC

High-Entropy Materials HEA Traditional Materials TRA

MP-ID: mp-1017119 · Space group: Amm2 (#38)

Materials Project API

Basic Information

Formula

Mg6SbC

MP-ID

mp-1017119

Elements

Sites

Density

2.8485

g/cm³

Volume

325.98

Å³

Cell a

4.8884

Cell b

6.1942

Cell c

10.7657

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
16.47	5.3829	23.7	(0,0,2)
16.51	5.3690	68.8	(0,1,1)
18.15	4.8884	17.4	(1,0,0)
24.60	3.6188	15.3	(1,0,2)
24.63	3.6146	68.0	(1,1,1)
28.75	3.1051	20.6	(0,1,3)
28.83	3.0971	5.7	(0,2,0)
33.29	2.6914	14.7	(0,0,4)
33.38	2.6845	30.0	(0,2,2)
34.21	2.6210	26.9	(1,1,3)
34.28	2.6162	6.8	(1,2,0)
36.77	2.4442	36.8	(2,0,0)
38.17	2.3577	51.0	(1,0,4)
38.25	2.3530	100.0	(1,2,2)
40.53	2.2255	4.7	(2,0,2)
40.55	2.2245	15.1	(2,1,1)
44.55	2.0338	7.9	(0,1,5)
44.60	2.0315	2.7	(0,2,4)
44.69	2.0278	7.9	(0,3,1)
47.33	1.9206	10.7	(2,1,3)
47.38	1.9187	2.8	(2,2,0)
48.48	1.8778	8.2	(1,1,5)
48.53	1.8760	6.0	(1,2,4)
48.61	1.8730	8.1	(1,3,1)

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Energy Properties

Formation Energy/atom

0.54713

eV/atom

Energy/atom

-2.34572

eV/atom

Energy above Hull

0.6809

eV/atom

Uncorrected Energy

-2.3457

eV/atom

Volume/atom

20.37

Å³

c/a Ratio

2.2023

Electronic Properties

Metallic

Metal

Band Gap

Direct Gap

CBM

N/A

Magnetic Properties

Magnetic

Total Mag. Moment

0.0092

μB

Mag. Ordering

Mag. Sites

Magnetization/Volume

0.000030

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

0.125

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

0.3202

Ω > 1.1 favors solid solution

Atomic Size Mismatch δr

18.401%

δr < 6.6% favors single-phase solid solution

Electronegativity Diff Δχ

0.4465

smaller = more stable mixing

VEC

2.625

valence electron concentration, affects phase stability

Mix Enthalpy ΔH_mix

-24.511

kJ/mol; negative = exothermic mixing

Entropy Norm

0.6696

SS Former

Phase Tendency

Traditional Material Features

ROM Blended-Feature Radar

Rating & Classification

Tier

Score

0.629

Family

Mg-based Alloy

Matrix Element

Mg · 0.750

Related Tasks

Related computation task IDs (1)

aaacfwri

Citation & References

Materials Project Page

https://materialsproject.org/materials/mp-1017119

Reference Citation

The crystal structure and related material properties of Mg6SbC were obtained from the Materials Project database (MP-ID: mp-1017119, 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_Mg6SbC
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.88840100
_cell_length_b   6.19420700
_cell_length_c   10.76570400
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   90.00000000
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Mg6SbC
_chemical_formula_sum   'Mg12 Sb2 C2'
_cell_volume   325.98301617
_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  0.24928300  0.41654500  1.0
  Mg  Mg1  1  0.50000000  0.75071700  0.41654500  1.0
  Mg  Mg2  1  0.00000000  0.76608700  0.08635700  1.0
  Mg  Mg3  1  0.00000000  0.23391300  0.08635700  1.0
  Mg  Mg4  1  0.00000000  0.00000000  0.32509900  1.0
  Mg  Mg5  1  0.00000000  0.50000000  0.33508900  1.0
  Mg  Mg6  1  0.50000000  0.74928300  0.91654500  1.0
  Mg  Mg7  1  0.50000000  0.25071700  0.91654500  1.0
  Mg  Mg8  1  0.00000000  0.26608700  0.58635700  1.0
  Mg  Mg9  1  0.00000000  0.73391300  0.58635700  1.0
  Mg  Mg10  1  0.00000000  0.50000000  0.82509900  1.0
  Mg  Mg11  1  0.00000000  0.00000000  0.83508900  1.0
  Sb  Sb12  1  0.50000000  0.50000000  0.16732400  1.0
  Sb  Sb13  1  0.50000000  0.00000000  0.66732400  1.0
  C  C14  1  0.50000000  0.00000000  0.16667800  1.0
  C  C15  1  0.50000000  0.50000000  0.66667800  1.0

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