MgSiSb2 — Properties & Data | MatWorld

MgSiSb2

ceramic

· JVASP-90803· MgSiSb2

MgSiSb₂ is an intermetallic ceramic compound combining magnesium, silicon, and antimony elements, belonging to the family of ternary semiconducting ceramics and potential thermoelectric materials. This material is primarily of research interest for thermoelectric energy conversion applications, where it may offer advantages in converting waste heat to electricity, particularly in moderate-temperature operating regimes. While not yet widely deployed in high-volume production, compounds in this material family are investigated as alternatives to conventional thermoelectrics due to their potential for improved figure-of-merit and sustainability compared to established lead-telluride or bismuth-telluride systems.

Thermoelectric devicesWaste heat recoveryResearch/experimental semiconductorsMid-temperature power generationAdvanced ceramic compositesSolid-state energy conversion

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	44.36	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.3000	-	DFT · OptB88vdW
Shear Modulus(G)	21.53	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	3.981	kg/m³	DFT · OptB88vdW

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Filter by

Method

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	0.8360	eV	DFT · OptB88vdW
↳	1.409	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	14.02	-	DFT · OptB88vdW
↳	10.13	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	33.57	%	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)	0.1170	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.06373	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

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.

MgSiSb2

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental