CoSb2

semiconductor
· CoSb2

CoSb2 is a cobalt antimonide intermetallic compound belonging to the skutterudite family of semiconductors, characterized by a cage-like crystal structure that gives it exceptional thermoelectric properties. While primarily investigated as a research material for advanced thermoelectric applications, CoSb2 and related skutterudites are being developed for solid-state power generation and cooling in automotive, aerospace, and industrial waste-heat recovery systems where conventional semiconductors cannot match the combination of electrical conductivity and thermal isolation. Engineers select this material class for extreme-temperature environments and high-efficiency energy conversion where the cage structure effectively scatters phonons while maintaining electron mobility—a critical advantage over conventional semiconductors in harsh operating conditions.

thermoelectric power generationwaste heat recovery systemshigh-temperature energy conversionaerospace thermal managementautomotive exhaust recuperationsolid-state cooling devices

Compliance & Regulations

?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
Units:
siimperial
PropertyValueUnitConditionsSource
Bulk Modulus(K)2 entries
99.47
GPa—
↳
99.47
GPa—
Elastic Compliance Tensor(Sij)
Matrix (redacted)
1/GPa—
Elastic Anisotropy(AU)
0.8631
-—
Elastic Stiffness Tensor(Cij)
Matrix (redacted)
Pa—
Poisson's Ratio(ν)
0.2331
-—
Shear Modulus(G)2 entries
64.58
GPa—
↳
64.58
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.
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Density(ρ)
8.095
kg/m³—
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Band Gap(Eg)3 entries
0.2000
eV—
↳
0.1700
eV—
↳
0.000
eV—
Magnetic Moment(μB)
0.000
µB—
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.
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Energy Above Hull(ΔEhull)
0.00740
eV/atom—
Formation Energy(ΔHf)
-0.1452
eV/atom—
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.