YO2 — Properties & Data | MatWorld

YO2

ceramic

· JVASP-106659· YO2

YO₂ (yttrium dioxide) is a ceramic oxide compound belonging to the rare-earth oxide family, characterized by a fluorite crystal structure and high thermal stability. It is used primarily in advanced thermal barrier coatings, solid-state electrolytes for fuel cells, and specialized optical applications where chemical inertness and thermal performance are critical. YO₂ offers superior thermal stability compared to common oxides, making it valuable in extreme-temperature environments, though it remains less commonly specified than yttria-stabilized zirconia in many thermal protection applications.

thermal barrier coatingssolid oxide fuel cellshigh-temperature ceramicsoptical windowsrefractory applicationsrare-earth oxide components

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	5.063	kg/m³	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.000	eV	DFT · OptB88vdW
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.2155	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-3.004	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.

YO2

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental