Mg6TiSb

High-Entropy Materials HEA Traditional Materials TRA

MP-ID: mp-1021321 · Space group: Amm2 (#38)

Materials Project API

Basic Information

Formula

Mg6TiSb

MP-ID

mp-1021321

Elements

Sites

Density

3.0018

g/cm³

Volume

349.01

Å³

Cell a

5.2641

Cell b

6.0029

Cell c

11.0446

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
16.05	5.5223	37.3	(0,0,2)
16.81	5.2742	22.6	(0,1,1)
16.84	5.2641	33.4	(1,0,0)
23.35	3.8103	30.9	(1,0,2)
23.88	3.7258	24.2	(1,1,1)
28.44	3.1383	7.2	(0,1,3)
29.77	3.0014	8.4	(0,2,0)
32.43	2.7612	17.1	(0,0,4)
33.24	2.6956	9.8	(1,1,3)
34.00	2.6371	31.7	(0,2,2)
34.06	2.6320	44.5	(2,0,0)
34.40	2.6074	11.2	(1,2,0)
36.76	2.4452	57.1	(1,0,4)
37.87	2.3760	8.6	(2,0,2)
38.17	2.3578	100.0	(1,2,2)
38.22	2.3551	6.2	(2,1,1)
43.66	2.0730	2.8	(0,1,5)
44.59	2.0321	5.3	(0,2,4)
44.95	2.0167	4.3	(2,1,3)
45.85	1.9789	4.9	(2,2,0)
46.10	1.9689	2.4	(0,3,1)
47.12	1.9289	3.2	(1,1,5)
47.74	1.9051	11.2	(2,0,4)
47.99	1.8957	8.6	(1,2,4)

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Energy Properties

Formation Energy/atom

0.00545

eV/atom

Energy/atom

-2.72047

eV/atom

Energy above Hull

0.1721

eV/atom

Uncorrected Energy

-2.6965

eV/atom

Volume/atom

21.81

Å³

c/a Ratio

2.0981

Electronic Properties

Metallic

Metal

Band Gap

Direct Gap

CBM

N/A

Magnetic Properties

Magnetic

Total Mag. Moment

0.0239

μB

Mag. Ordering

Mag. Sites

Magnetization/Volume

0.000070

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

1.0664

Ω > 1.1 favors solid solution

Atomic Size Mismatch δr

3.887%

δr < 6.6% favors single-phase solid solution

Electronegativity Diff Δχ

0.2457

smaller = more stable mixing

VEC

2.625

valence electron concentration, affects phase stability

Mix Enthalpy ΔH_mix

-6.010

kJ/mol; negative = exothermic mixing

Entropy Norm

0.6696

SS Former

Phase Tendency

Traditional Material Features

ROM Blended-Feature Radar

Rating & Classification

Tier

Score

0.714

Family

Mg-based Alloy

Matrix Element

Mg · 0.750

Related Tasks

Related computation task IDs (1)

aaacgdfk

Citation & References

Materials Project Page

https://materialsproject.org/materials/mp-1021321

Reference Citation

The crystal structure and related material properties of Mg6TiSb were obtained from the Materials Project database (MP-ID: mp-1021321, 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_Mg6TiSb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.26407600
_cell_length_b   6.00289000
_cell_length_c   11.04459400
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   90.00000000
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Mg6TiSb
_chemical_formula_sum   'Mg12 Ti2 Sb2'
_cell_volume   349.00551662
_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  0.24810700  0.41671300  1.0
  Mg  Mg1  1  0.00000000  0.75189300  0.41671300  1.0
  Mg  Mg2  1  0.50000000  0.75814500  0.08283700  1.0
  Mg  Mg3  1  0.50000000  0.24185500  0.08283700  1.0
  Mg  Mg4  1  0.50000000  0.00000000  0.32976600  1.0
  Mg  Mg5  1  0.50000000  0.50000000  0.33557200  1.0
  Mg  Mg6  1  0.00000000  0.74810700  0.91671300  1.0
  Mg  Mg7  1  0.00000000  0.25189300  0.91671300  1.0
  Mg  Mg8  1  0.50000000  0.25814500  0.58283700  1.0
  Mg  Mg9  1  0.50000000  0.74185500  0.58283700  1.0
  Mg  Mg10  1  0.50000000  0.50000000  0.82976600  1.0
  Mg  Mg11  1  0.50000000  0.00000000  0.83557200  1.0
  Ti  Ti12  1  0.00000000  0.00000000  0.16819500  1.0
  Ti  Ti13  1  0.00000000  0.50000000  0.66819500  1.0
  Sb  Sb14  1  0.00000000  0.50000000  0.16736200  1.0
  Sb  Sb15  1  0.00000000  0.00000000  0.66736200  1.0

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