UTa2O8 — Properties & Data | MatWorld

UTa2O8

ceramic

· JVASP-34885· UTa2O8

UTa₂O₈ is a ceramic compound containing uranium and tantalum oxides, belonging to the family of refractory oxide ceramics. This material is primarily of research and specialized industrial interest, where its high density and thermal stability make it relevant for nuclear fuel applications, radiation shielding, and high-temperature structural components. Compared to conventional refractory ceramics, uranium-tantalum oxides offer enhanced nuclear properties and extreme temperature performance, though their use is confined to specialized defense, aerospace, and nuclear sectors due to regulatory constraints and material complexity.

nuclear fuel matricesradiation shieldinghigh-temperature refractory applicationsaerospace thermal protectionresearch ceramic compositesdense ceramic structures

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	9.103	kg/m³	DFT · OptB88vdW

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	1.264	eV	DFT · OptB88vdW
↳	1.347	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)	7.304	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000392	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00217	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-467.1	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	461.5	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	33.94	%	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)	0.4217	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-2.688	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.

UTa2O8

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental