NpBi — Properties & Data | MatWorld

NpBi

ceramic

· JVASP-18317· NpBi

NpBi is an intermetallic ceramic compound combining neptunium and bismuth, representing an experimental material primarily studied in nuclear materials science and actinide chemistry rather than conventional engineering practice. This material belongs to the family of actinide-based ceramics and is of research interest for understanding intermetallic phase behavior and potential applications in advanced nuclear fuel cycles or high-temperature nuclear systems. Due to its neptunium content and limited industrial availability, NpBi remains largely confined to specialized nuclear research facilities and is not commonly selected for standard engineering applications.

Nuclear materials researchActinide chemistry studiesHigh-temperature nuclear systemsIntermetallic phase behaviorAdvanced fuel cycle development

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.4143	lb/in³	DFT · OptB88vdW

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	0.000	eV	DFT · OptB88vdW
↳	0.000	eV	DFT · TBmBJ
Magnetic Moment(μB)	3.976	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000654	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000653	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-47.10	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	-47.15	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)	0.08760	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.07440	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.

NpBi

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental