Tm2Ti2O7

ceramic

· JVASP-59268· Tm2Ti2O7

Tm₂Ti₂O₇ is a pyrochlore-structured ceramic compound composed of thulium and titanium oxides, belonging to the rare-earth titanate family of advanced ceramics. This material is primarily of research and development interest for high-temperature applications, particularly as a thermal barrier coating candidate and potential solid electrolyte component, where its crystalline pyrochlore structure offers tailored thermal, electrical, and mechanical properties distinct from conventional titanate ceramics.

thermal barrier coatingshigh-temperature aerospace applicationssolid-state electrolytesmaterials researchrare-earth ceramics

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2573	lb/in³	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	2.649	eV	DFT · OptB88vdW
↳	3.094	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	6.088	-	DFT · OptB88vdW
↳	3.834	-	DFT · TBmBJ
Electron Effective Mass(m*e)	1.600	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.100	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00110	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00235	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-330.6	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	361.9	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	3.530	%	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)	-3.604	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.

Tm2Ti2O7 — Properties & Data | MatWorld

Tm2Ti2O7

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental