YbEr2S4 — Properties & Data | MatWorld

YbEr2S4

ceramic

· JVASP-39793· YbEr2S4

YbEr2S4 is a rare-earth sulfide ceramic compound containing ytterbium and erbium, belonging to the family of lanthanide chalcogenides. This material is primarily of research and developmental interest rather than established in high-volume industrial production. Rare-earth sulfides are investigated for specialized applications requiring high thermal stability, optical transparency in infrared wavelengths, and unique electronic properties; YbEr2S4 specifically may be evaluated for infrared optics, photonic devices, or solid-state laser host materials where the combined rare-earth dopants offer tunable spectroscopic properties.

infrared optics and windowssolid-state laser materialsphotonic devicesresearch and development compoundsthermal management componentshigh-temperature ceramics

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	6.628	kg/m³	DFT · OptB88vdW

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

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	1.467	eV	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	6.768	-	DFT · OptB88vdW
Electron Effective Mass(m*e)	0.5833	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.583	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000836	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00101	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-111.6	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	200.1	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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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-2.319	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.

YbEr2S4

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental