PaO — Properties & Data | MatWorld

PaO

ceramic

· JVASP-15036· PaO

Protactinium oxide (PaO) is a rare actinide ceramic compound formed from protactinium, a radioactive transuranic element. This material exists primarily in research and nuclear contexts rather than commercial engineering applications, as protactinium's extreme scarcity, radioactivity, and associated handling hazards limit practical use. Interest in actinide oxides focuses on fundamental nuclear science, materials behavior under irradiation, and specialized fuel cycle chemistry rather than conventional structural or functional engineering.

nuclear materials researchactinide oxide chemistryradiation effects studieslaboratory research only

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	207.4	GPa	DFT · OptB88vdW
Shear Modulus(G)	31.22	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	13.68	kg/m³	DFT · OptB88vdW

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

Filter by

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	0.000	eV	DFT · OptB88vdW
Magnetic Moment(μB)	0.00400	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	6.600e-7	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	4.500e-7	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	0.3300	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.2800	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)	0.2949	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-2.638	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.

PaO

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental