Y2SeO2 — Properties & Data | MatWorld

Y2SeO2

ceramic

· Y2SeO2

Y2SeO2 is an yttrium selenite ceramic compound combining rare-earth yttrium with selenium and oxygen. This is a research-phase material primarily investigated for functional ceramic applications; it belongs to the broader family of rare-earth oxide and oxychalcogenide ceramics that are explored for high-temperature stability, optical, and electronic properties. Industrial adoption remains limited, but compounds in this family are evaluated for specialized applications in photonics, thermal management, and advanced structural ceramics where conventional oxides reach performance limits.

Optical ceramics and photonicsHigh-temperature structural ceramicsThermal barrier coatingsResearch and developmentRare-earth functional materialsRadiation-resistant ceramics

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	89.30	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.3500	-	DFT · OptB88vdW
Shear Modulus(G)	44.86	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	5.423	kg/m³	DFT · OptB88vdW

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

Filter by

Method

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	2.351	eV	DFT · OptB88vdW
↳	3.453	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)3 entries	48.72	-	DFT · OptB88vdW
↳	15.34	-	DFT · PBE
↳	9.809 range 5.640–13.98median of 2 measurements	-	DFT · PBEsol
High-Frequency Dielectric Constant (ε∞)(ε∞)	4.830	-	DFT · TBmBJ
Electronic Dielectric Tensor(ε∞)	Matrix (redacted)	-	DFT · PBE
Total Dielectric Tensor(ε)	Matrix (redacted)	-	DFT · PBE
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.000	C/m²	DFT · OptB88vdW
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	1.480	%	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.

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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.04800	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-3.296	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.

Y2SeO2

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental