NaMgSb — Properties & Data | MatWorld

NaMgSb

ceramic

· NaMgSb

NaMgSb is an intermetallic ceramic compound belonging to the half-Heusler or related ternary compound family, combining sodium, magnesium, and antimony elements. This material is primarily of research interest for thermoelectric applications, where its electronic and thermal properties make it a candidate for solid-state heat-to-electricity conversion devices. Engineers would consider NaMgSb in next-generation thermoelectric cooling and power generation systems where conventional semiconductors face limitations, though it remains an experimental material not yet widely deployed in production environments.

thermoelectric cooling deviceswaste heat recoverysolid-state power generationcryogenic applicationsmaterials research and developmentsemiconductor alternatives

Compliance & Regulations

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

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Method

Property	Value	Unit	Conditions
Bulk Modulus(K)2 entries	26.91	GPa	DFT
↳	29.10	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2600	-	DFT · OptB88vdW
Shear Modulus(G)2 entries	15.49	GPa	DFT
↳	17.86	GPa	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.

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Property	Value	Unit	Conditions	Source
Density(ρ)	3.418	kg/m³	DFT · OptB88vdW

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	1.172	eV	DFT · OptB88vdW
↳	1.726	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)2 entries	20.22	-	DFT · OptB88vdW
↳	18.11	-	DFT · PBE
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	10.07	-	DFT · OptB88vdW
↳	7.717	-	DFT · TBmBJ
Electronic Dielectric Tensor(ε∞)	Matrix (redacted)	-	DFT · PBE
Total Dielectric Tensor(ε)	Matrix (redacted)	-	DFT · PBE
Electron Effective Mass(m*e)	0.7533	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	0.8967	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	0.00189	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00413	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-209.3	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	284.9	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	28.82	%	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)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.5752	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.

NaMgSb

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental