CaY2S4 — Properties & Data | MatWorld

CaY2S4

ceramic

· JVASP-55277· CaY2S4

CaY2S4 is a rare-earth calcium yttrium sulfide ceramic compound belonging to the thiouranate family of sulfide ceramics. This material is primarily investigated in research contexts for optical and thermal applications, particularly as a potential host material for luminescent ions in phosphors and as a component in high-temperature ceramic systems where sulfide stability is advantageous. Compared to oxide ceramics, sulfide ceramics like CaY2S4 offer broader transparency windows in the infrared spectrum and can host certain rare-earth dopants more effectively for specific photonic applications.

infrared optics and windowsrare-earth phosphors and luminescent materialsresearch ceramicsthermal barrier coatings (experimental)photonic materials development

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	3.479	kg/m³	DFT · OptB88vdW

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

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	1.541	eV	DFT · OptB88vdW
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000870	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000772	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-126.5	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	209.4	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)	0.000500	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-2.315	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.

CaY2S4

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental