MgAl2S4

metal

· JVASP-94930· MgAl2S4

MgAl₂S₄ is a ternary magnesium-aluminum sulfide compound that belongs to the thiospinel family of ceramic materials. This material is primarily of research and developmental interest rather than a widespread commercial product, with potential applications in solid-state electrolytes, optical materials, and high-temperature ceramics where sulfide-based compounds offer chemical stability and thermal properties distinct from oxide counterparts. Engineers would consider this class of material when conventional oxides are unsuitable due to moisture sensitivity or when the sulfide's crystal structure offers advantages in ionic conduction or electronic properties.

solid-state battery electrolytesoptical/photonic materials (research phase)high-temperature ceramicsionic conductor systemssemiconductor researchcorrosion-resistant coatings (experimental)

Compliance & Regulations

?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	6,774.7	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2700	-	DFT · OptB88vdW
Shear Modulus(G)	3,752.1	ksi	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Property	Value	Unit	Conditions	Source
Density(ρ)	0.08512	lb/in³	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	3.130	eV	DFT · OptB88vdW
↳	3.848	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	9.129	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	5.835	-	DFT · OptB88vdW
↳	5.375	-	DFT · TBmBJ
Electron Effective Mass(m*e)	1.120	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	2.993	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.000	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00126	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00132	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-181.3	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	380.4	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	0.1700	%	DFT · TBmBJ

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.02890	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-1.345	eV/atom	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data

Regulatory Screening

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RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.

MgAl2S4 — Properties & Data | MatWorld

MgAl2S4

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

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