YbSm2S4 — Properties & Data | MatWorld

YbSm2S4

ceramic

· JVASP-53584· YbSm2S4

YbSm₂S₄ is a rare-earth sulfide ceramic compound combining ytterbium and samarium in a sulfide matrix, representing a materials class of interest in solid-state physics and advanced ceramics research. This composition belongs to the rare-earth chalcogenide family and is primarily investigated for potential applications in optical, thermal, and electronic functions where rare-earth-doped ceramics offer unique properties. While not yet established in high-volume industrial production, materials in this chemical family are evaluated for niche applications requiring specific thermal stability, optical transparency, or electrical characteristics that conventional ceramics cannot deliver.

optical ceramics researchrare-earth phosphorssolid-state electronicshigh-temperature thermal applicationsspecialty refractory compoundsmaterials science development

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	6.661	kg/m³	DFT · OptB88vdW

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

Filter by

Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	2.091	eV	DFT · OptB88vdW
↳	2.775	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	19.74	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	8.216	-	DFT · OptB88vdW
↳	6.012	-	DFT · TBmBJ
Electron Effective Mass(m*e)	0.4900	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.900	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.1683	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00107	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00219	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-171.9	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	361.9	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	7.520	%	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.

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

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-2.317	eV/atom	DFT · OptB88vdW

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

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.

YbSm2S4

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental