Sm1 B2

semiconductor
· Sm1 B2

SmB₆ (samarium hexaboride) is an intermetallic compound semiconductor belonging to the rare-earth boride family, valued for its unique electronic properties and high thermal stability. This material is primarily used in thermionic emission applications, particularly in electron gun cathodes for high-energy physics equipment and specialized vacuum electronics, where its low work function and exceptional electron emission characteristics outperform conventional tungsten or molybdenum cathodes. SmB₆ is also investigated for potential use in advanced thermal management, magnetoresistive devices, and as a research material for studying strongly correlated electron systems, making it notable in niche high-performance applications where conventional semiconductors cannot operate reliably at elevated temperatures or in demanding vacuum environments.

electron gun cathodesthermionic emittershigh-energy physics instrumentationvacuum electronicsthermal barrier coatingsresearch semiconductors

Compliance & Regulations

?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
Units:
siimperial
PropertyValueUnitConditionsSource
Bulk Modulus(K)
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Pa——
Shear Modulus(G)
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Pa——
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Band Gap(Eg)
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eV——
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Formation Energy(ΔHf)
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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.