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	—

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

Property	Value	Unit	Conditions
Band Gap(Eg)	1.541	eV	—
Magnetic Moment(μB)	0.000	µB	—
Seebeck Coefficient(S)	-126.5	µV/K	—

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

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000500	eV/atom	—
Formation Energy(ΔHf)	-2.315	eV/atom	—

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

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