Sm21Fe179
metal· Sm21Fe179
Sm₂₁Fe₁₇₉ is an iron-rich rare-earth intermetallic compound containing samarium, part of the SmFe family of permanent magnet materials. This material is of primary research interest for high-performance magnetic applications where strong permanent magnetism is needed, particularly in contexts exploring alternatives or supplements to conventional rare-earth magnets like Nd₂Fe₁₄B. The high iron content makes it potentially cost-effective compared to heavy rare-earth magnets, though this particular stoichiometry is primarily encountered in materials science research rather than mature industrial production.
permanent magnets (research phase)high-temperature magnetic applicationsmagnetic materials developmentrare-earth magnet alternativesmotor and generator design (advanced research)
Compliance & Regulations
?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Formation Energy(ΔHf) | — | 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.