Y2HfO5 — Properties & Data | MatWorld

Y2HfO5

ceramic

· JVASP-50859· Y2HfO5

Y2HfO5 is a hafnium-yttrium oxide ceramic compound belonging to the rare-earth oxide family, typically investigated for high-temperature structural and thermal applications. This material is primarily of research interest rather than established commercial use, studied for potential applications in extreme thermal environments where conventional oxides degrade, such as thermal barrier coatings and refractory systems in aerospace and advanced energy systems. Engineers would consider this material when seeking enhanced thermal stability and oxidation resistance beyond standard zirconia or alumina systems, particularly in applications demanding combination of thermal insulation and mechanical durability at very high temperatures.

thermal barrier coatingshigh-temperature refractoriesaerospace heat shieldsadvanced energy systemsresearch/development phase

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	6.373	kg/m³	DFT · OptB88vdW

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

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	4.667	eV	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	4.245	-	DFT · OptB88vdW
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00139	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000803	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-322.7	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	417.1	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C

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)	0.03670	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-3.806	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.

Y2HfO5

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental