SmSe — Properties & Data | MatWorld

SmSe

Name: SmSe
Brand: MatWorld

semiconductor

· SmSe

SmSe (samarium selenide) is a rare-earth semiconductor compound belonging to the lanthanide chalcogenide family, characterized by ionic bonding between samarium and selenium atoms. While primarily of research interest, SmSe and related rare-earth selenides are investigated for infrared optics, thermoelectric devices, and solid-state physics applications where their narrow bandgap and high refractive index are advantageous. Engineers consider SmSe when conventional semiconductors (Si, GaAs) are unsuitable for mid-to-far infrared wavelengths or when rare-earth electronic properties are essential, though material availability and cost typically limit adoption to specialized defense, sensing, and basic research contexts.

infrared optics and detectorsthermoelectric devicessolid-state physics researchrare-earth semiconductor researchhigh-temperature sensingadvanced materials development

Compliance & Regulations

?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	7,305.6	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2900	-	DFT · OptB88vdW
Shear Modulus(G)	411.9	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2063	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)2 entries	0.4600	eV	Measured
↳	0.000	eV	DFT · OptB88vdW
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000765	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000760	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-9.580	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	-9.580	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C

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)	0.5837	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	-1.297	eV/atom	DFT · OptB88vdW
↳	-2.298	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

Regulatory Screening

Environmental

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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.

SmSe

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