SmS

semiconductor
· SmS

SmS (samarium monosulfide) is a rare-earth transition metal chalcogenide semiconductor belonging to the rocksalt structure family, notable for its mixed-valence electronic behavior and strong electron-phonon interactions. While primarily studied in research contexts for fundamental condensed matter physics, SmS and related rare-earth chalcogenides are of interest for thermoelectric energy conversion, optical devices, and magnetic applications where the unusual valence-transition properties near room temperature can be exploited. Engineers consider this material when designing systems requiring narrow band-gap semiconductors with temperature-dependent electronic behavior or when rare-earth magnetism and semiconductivity must coexist.

Thermoelectric energy conversionValence-transition materials researchRare-earth semiconductor devicesHigh-pressure physics experimentsOptical and photonic components (research)

Compliance & Regulations

?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
Units:
siimperial
PropertyValueUnitConditionsSource
Bulk Modulus(K)
8,686.3
ksi—
Exfoliation Energy(Eexf)
62.39
meV/atom—
Poisson's Ratio(ν)
-0.2600
-—
Shear Modulus(G)
3,610
ksi—
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Density(ρ)
0.2080
lb/in³—
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Band Gap(Eg)2 entries
2.300
eV—
↳
0.000
eV—
Magnetic Moment(μB)
0.00300
µB—
Piezoelectric Modulus(eij)
0.000
C/m²—
Seebeck Coefficient(S)
-8.000
µV/K—
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)
0.2942
eV/atom—
Formation Energy(ΔHf)2 entries
-2.234
eV/atom—
↳
-1.876
eV/atom—
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

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.