MgS — Properties & Data | MatWorld

MgS

Name: MgS
Brand: MatWorld

ceramic

· MgS

Magnesium sulfide (MgS) is an inorganic ceramic compound belonging to the rock-salt structure family of binary ionic ceramics. It is primarily of interest in research and specialized optics applications rather than high-volume industrial production, valued for its wide optical transparency window extending into the infrared spectrum. MgS serves niche roles in infrared optics, thin-film coatings, and semiconductor research, where its combination of ionic bonding and wide bandgap makes it attractive for applications requiring thermal stability and optical clarity at longer wavelengths.

infrared optics and windowsthin-film coatingssemiconductor researchoptical transmission materialshigh-temperature ceramic applications

Compliance & Regulations

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

Units:

si imperial

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Method

Property	Value	Unit	Conditions
Bulk Modulus(K)2 entries	10,796.4	ksi	DFT
↳	11,356.5	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2100	-	DFT · OptB88vdW
Shear Modulus(G)2 entries	7,554.2	ksi	DFT
↳	8,145.3	ksi	DFT · OptB88vdW

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.

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.09563	lb/in³	DFT · OptB88vdW

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

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Method

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	2.811	eV	DFT · OptB88vdW
↳	4.032	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)2 entries	15.68	-	DFT · OptB88vdW
↳	16.02	-	DFT · PBE
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	5.794	-	DFT · OptB88vdW
↳	4.735	-	DFT · TBmBJ
Electronic Dielectric Tensor(ε∞)	Matrix (redacted)	-	DFT · PBE
Total Dielectric Tensor(ε)	Matrix (redacted)	-	DFT · PBE
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)2 entries	0.000	C/m²	DFT · OptB88vdW
↳	0.1936	C/m²	DFT · PBE
Piezoelectric Stress Tensor(eij)	Matrix (redacted)	C/m²	DFT · PBE
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	0.01000	%	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.

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

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Method

Property	Value	Unit	Conditions
Energy Above Hull(ΔEhull)	0.02150	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	-1.623	eV/atom	DFT · OptB88vdW
↳	-1.791	eV/atom	Measured

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.

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

Environmental

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.

MgS

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental