Mg2Si — Properties & Data | MatWorld

Mg2Si

semiconductor

· Mg2Si

Mg2Si is an intermetallic semiconductor compound combining magnesium and silicon, belonging to the family of binary semiconductors with potential thermoelectric properties. It is primarily investigated as a thermoelectric material for waste heat recovery and power generation applications, where its combination of mechanical rigidity and low thermal conductivity makes it attractive for solid-state energy conversion. Mg2Si remains largely in research and development phases rather than high-volume production, but represents a promising alternative to conventional thermoelectrics due to its abundance of constituent elements, lower cost potential, and environmental compatibility compared to lead-based or rare-earth competitors.

thermoelectric power generationwaste heat recoverysolid-state cooling deviceshigh-temperature sensorssemiconductor researchlightweight structural composites

Compliance & Regulations

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

Units:

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)3 entries	52.86	GPa	—
↳	52.86	GPa	—
↳	55.00	GPa	—
Elastic Compliance Tensor(Sij)	Matrix (redacted)	1/GPa	—
Elastic Anisotropy(AU)	0.000590	-	—
Elastic Stiffness Tensor(Cij)	Matrix (redacted)	Pa	—
Poisson's Ratio(ν)2 entries	0.1709	-	—
↳	0.1800	-	—
Shear Modulus(G)3 entries	44.57	GPa	—
↳	44.57	GPa	—
↳	45.60	GPa	—

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
Thermal Conductivity(k)2 entries	4.000	W/(m·K)	—
↳	4.000	W/(m·K)	127°C

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
Density(ρ)	2.242	kg/m³	—

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Property	Value	Unit	Conditions	Source
Band Gap(Eg)2 entries	2.270	eV	—
↳	0.000	eV	—
Electrical Conductivity(σ)	506.1	S/cm	127°C
Electrical Resistivity(ρe)	0.0000198	Ω·m	127°C
Magnetic Moment(μB)	0.000	µB	—
Thermoelectric Power Factor(PF)	0.00181	W/(m·K²)	127°C
Seebeck Coefficient(S)2 entries	-189	μV/K	127°C
↳	-237.5	µV/K	—
Thermoelectric Figure of Merit(zT)	0.1808	-	127°C

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)	0.2023	eV/atom	—
Formation Energy(ΔHf)2 entries	-0.2689	eV/atom	—
↳	-0.01117	eV/atom	—

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

Regulatory Screening

Environmental

Export Control

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.