Ho2Ti2O7 — Properties & Data | MatWorld

Ho2Ti2O7

ceramic

· JVASP-59250· Ho2Ti2O7

Ho₂Ti₂O₇ is a holmium titanate pyrochlore ceramic, a rare-earth titanate compound belonging to the family of pyrochlore oxides known for high thermal stability and low thermal conductivity. This material is primarily of research and development interest for advanced thermal barrier coating (TBC) applications and high-temperature structural ceramics, where its ability to retain strength at extreme temperatures and resist thermal shock makes it an alternative to conventional yttria-stabilized zirconia (YSZ) systems, particularly for next-generation aerospace and energy applications.

thermal barrier coatingshigh-temperature ceramicsaerospace engine componentsgas turbine bladesthermal insulation systemsresearch materials

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	6.895	kg/m³	DFT · OptB88vdW

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	2.740	eV	DFT · OptB88vdW
↳	3.110	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	6.106	-	DFT · OptB88vdW
↳	3.818	-	DFT · TBmBJ
Electron Effective Mass(m*e)	1.430	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.150	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00122	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00222	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-365.7	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	360.8	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	3.390	%	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)	-3.593	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.

Ho2Ti2O7

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental