Sr3Hf2O7

ceramic

· JVASP-52552· Sr3Hf2O7

Sr₃Hf₂O₇ is a strontium hafnium oxide ceramic belonging to the pyrochlore family, a class of complex oxides with high structural complexity and thermal stability. This material is primarily of research interest for advanced high-temperature applications, particularly as a thermal barrier coating (TBC) candidate and in solid oxide fuel cell (SOFC) electrolyte systems, where its hafnium-based composition offers superior oxidation resistance and refractoriness compared to conventional zirconia-based alternatives.

thermal barrier coatingssolid oxide fuel cellshigh-temperature structural ceramicsaerospace propulsionadvanced refractory materialsenergy conversion systems

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2497	lb/in³	DFT · OptB88vdW

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	4.346	eV	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	4.190	-	DFT · OptB88vdW
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00174	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000587	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-260.4	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	398	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)	0.01400	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-3.550	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.

Sr3Hf2O7 — Properties & Data | MatWorld

Sr3Hf2O7

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental