SmS — Properties & Data | MatWorld

SmS

Name: SmS
Brand: MatWorld

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:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	8,686.3	ksi	DFT · OptB88vdW
Exfoliation Energy(Eexf)	62.39	meV/atom	DFT · OptB88vdW
Poisson's Ratio(ν)	-0.2600	-	DFT · OptB88vdW
Shear Modulus(G)	3,610	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2080	lb/in³	DFT · OptB88vdW

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

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)3 entries	2.300	eV	Measured
↳	0.000	eV	DFT · OptB88vdW
↳	1.631	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)	114.9	-	DFT · TBmBJ
Magnetic Moment(μB)	0.00300	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.000	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000596	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000591	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-8.000	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	-7.980	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	30.48	%	DFT · TBmBJ

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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Method

Property	Value	Unit	Conditions
Energy Above Hull(ΔEhull)	0.2942	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	-1.876	eV/atom	DFT · OptB88vdW
↳	-2.234	eV/atom	Measured

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.

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

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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.

SmS

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