NpPa3 — Properties & Data | MatWorld

NpPa3

ceramic

· JVASP-39411· NpPa3

NpPa3 is a neptunium-protactinium ceramic compound, representing a specialized actinide oxide system relevant primarily to nuclear materials research and development. This material belongs to the family of transuranium ceramics studied for nuclear fuel applications and fundamental actinide chemistry, where its combination of actinide elements creates unique thermal, mechanical, and radiation response characteristics. NpPa3 is primarily a research-phase material used to advance understanding of mixed-actinide ceramic behavior, fuel performance prediction, and advanced nuclear cycle chemistries where conventional uranium-based ceramics are inadequate.

nuclear fuel developmentactinide materials researchadvanced reactor conceptstransmutation studiesmaterials irradiation testingtransuranium ceramics

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	16.32	kg/m³	DFT · OptB88vdW

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	0.000	eV	DFT · OptB88vdW
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00330	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00333	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	30.72	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	30.81	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)	0.3336	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	0.1845	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.

NpPa3

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental