Sr2Ta2O7 — Properties & Data | MatWorld

Sr2Ta2O7

ceramic

· JVASP-49168· Sr2Ta2O7

Sr2Ta2O7 is a strontium tantalate ceramic compound belonging to the family of complex oxide perovskites and related structures. This material is primarily of research and developmental interest, particularly for high-temperature applications and advanced functional ceramics where tantalate-based oxides offer exceptional thermal stability and chemical resistance. It is investigated for potential use in thermal barrier coatings, refractory applications, and electrochemical devices where the combination of strontium and tantalum oxides provides enhanced durability compared to single-oxide alternatives.

thermal barrier coatingshigh-temperature refractoriesadvanced ceramics researchelectrochemical applicationsaerospace thermal protection

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	6.905	kg/m³	DFT · OptB88vdW

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	3.067	eV	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	4.687	-	DFT · OptB88vdW
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00100	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00101	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-162.6	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	412.6	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)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-3.297	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.

Sr2Ta2O7

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental