CoSb3 — Properties & Data | MatWorld

CoSb3

semiconductor

· CoSb3

CoSb₃ is a skutterudite-structure intermetallic compound with semiconductor properties, notable for its potential as a thermoelectric material due to the favorable combination of electrical conductivity and low thermal conductivity in its crystal structure. The compound is primarily of research and development interest rather than widespread industrial production, with applications centered on advanced energy conversion and thermal management where its thermoelectric efficiency would enable direct heat-to-electricity conversion or solid-state cooling. CoSb₃ and related skutterudites represent a promising material family for next-generation power generation and waste-heat recovery systems, offering advantages over traditional thermoelectrics in mid-to-high temperature ranges.

thermoelectric power generationwaste heat recoverysolid-state cooling devicesmid-temperature energy conversionresearch-phase semiconductorsthermal management systems

Compliance & Regulations

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

Units:

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Method

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)3 entries	12,028.6	ksi	DFT
↳	12,183.2	ksi	DFT · OptB88vdW
↳	12,028.6	ksi	DFT · PBE
Elastic Compliance Tensor(Sij)	Matrix (redacted)	1/GPa	DFT · PBE
Elastic Anisotropy(AU)	0.1903	-	DFT · PBE
Elastic Stiffness Tensor(Cij)	Matrix (redacted)	ksi	DFT · PBE
Poisson's Ratio(ν)2 entries	0.2200	-	DFT · OptB88vdW
↳	0.2204	-	DFT · PBE
Shear Modulus(G)3 entries	8,269.2	ksi	DFT
↳	8,380.3	ksi	DFT · OptB88vdW
↳	8,269.2	ksi	DFT · PBE

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)	7.511	BTU/(hr·ft·°F)	Measured

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2669	lb/in³	DFT · OptB88vdW

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

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Method

Carrier

Property	Value	Unit	Conditions	Source
Band Gap(Eg)3 entries	0.06600	eV	DFT · OptB88vdW
↳	0.4900	eV	Measured
↳	0.5000	eV	Measured
Dielectric Constant (Relative Permittivity)(εr)	92.27	-	DFT · PBE
High-Frequency Dielectric Constant (ε∞)(ε∞)	40.26	-	DFT · OptB88vdW
Electronic Dielectric Tensor(ε∞)	Matrix (redacted)	-	DFT · PBE
Total Dielectric Tensor(ε)	Matrix (redacted)	-	DFT · PBE
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00177	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00136	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-226.1	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	150.1	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°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)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.1561	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

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.