Y2Ti2O7 — Properties & Data | MatWorld

Y2Ti2O7

ceramic

· JVASP-49573· Y2Ti2O7

Y2Ti2O7 is a rare-earth titanate ceramic belonging to the pyrochlore family, composed of yttrium, titanium, and oxygen. This material is primarily investigated as a thermal barrier coating (TBC) material and advanced refractory for high-temperature applications, valued for its potential to withstand extreme thermal cycling and oxidative environments better than conventional alternatives. Engineers consider Y2Ti2O7 for ultra-high-temperature structural applications where superior thermal stability and lower thermal conductivity are critical design requirements.

thermal barrier coatingshigh-temperature ceramicsjet engine componentsrefractory materialsaerospace thermal protectionresearch/advanced applications

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	4.900	kg/m³	DFT · OptB88vdW

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

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	2.757	eV	DFT · OptB88vdW
↳	3.115	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	6.058	-	DFT · OptB88vdW
↳	3.888	-	DFT · TBmBJ
Electron Effective Mass(m*e)	1.370	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.180	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00111	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00216	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-349.7	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	360.3	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	3.350	%	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)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-3.597	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.

Y2Ti2O7

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental