NpP

ceramic

· JVASP-15880· NpP

NpP is a ceramic compound based on neptunium phosphide, representing a rare actinide phosphide material primarily of scientific and nuclear research interest rather than general engineering use. This material belongs to the family of actinide ceramics, which are investigated for their potential in nuclear fuel applications, waste immobilization, and fundamental materials science studies of f-block elements. Its selection would be driven by specialized nuclear materials applications where understanding actinide chemistry and ceramic behavior under extreme conditions is critical.

Nuclear fuel researchActinide ceramicsWaste form materialsHigh-temperature nuclear applicationsMaterials science research

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	13,241.9	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2700	-	DFT · OptB88vdW
Shear Modulus(G)	8,615.2	ksi	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Property	Value	Unit	Conditions	Source
Density(ρ)	0.3625	lb/in³	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

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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)	3.693	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000759	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000767	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-29.55	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	-29.75	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.

Verified Unverified Low confidence (<80%) Link to source

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-1.099	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.

NpP — Properties & Data | MatWorld

NpP

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental