TmNiSb — Properties & Data | MatWorld

TmNiSb

metal

· TmNiSb

TmNiSb is an intermetallic compound composed of thulium, nickel, and antimony, belonging to the half-Heusler alloy family—a class of materials engineered for electronic and thermoelectric applications. This is primarily a research material investigated for its potential in thermoelectric energy conversion and magnetoresistive devices, where the combination of metallic bonding and specific electronic band structure offers advantages in temperature-dependent electrical and thermal transport. Half-Heusler compounds like TmNiSb are notable for their tunable properties and potential to outperform conventional metallic or semiconducting alternatives in niche applications requiring simultaneous control of electrical conductivity and thermal management.

thermoelectric power generationwaste heat recoverymagnetoresistive sensorsresearch semiconductorssolid-state coolinglow-temperature electronics

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	14,213.7	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2500	-	DFT · OptB88vdW
Shear Modulus(G)	8,641.3	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.3375	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	0.2280	eV	DFT · OptB88vdW
↳	0.2530	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	22.02	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	19.40	-	DFT · OptB88vdW
↳	18.23	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)2 entries	0.02976	C/m²	DFT · OptB88vdW
↳	0.1594	C/m²	DFT · PBE
Piezoelectric Stress Tensor(eij)	Matrix (redacted)	C/m²	DFT · PBE
Thermoelectric Power Factor(PF)2 entries	0.00350	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00230	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-269.2	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	180.9	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	5.840	%	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)	-0.9220	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

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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.

TmNiSb

Mechanical Properties

Physical Properties

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