UI4

Name: UI4
Brand: MatWorld

ceramic

· UI4

UI4 is an uranium-based ceramic compound belonging to the uranium iodide family. While specific compositional details are not provided, uranium iodides are primarily of research and specialized nuclear/materials science interest rather than mainstream engineering use. This material class is typically explored for nuclear fuel applications, solid-state chemistry studies, and specialized high-density ceramic systems where uranium's nuclear and thermal properties are relevant.

nuclear fuel researchmaterials science experimentationhigh-density ceramicssolid-state chemistry studiesradiation shielding (research)

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	1,594	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2800	-	DFT · OptB88vdW
Shear Modulus(G)	877.5	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2027	lb/in³	DFT · OptB88vdW

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

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	0.2780	eV	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	17.43	-	DFT · OptB88vdW
Electron Effective Mass(m*e)	0.06667	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	0.06667	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	4.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.0000357	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00000213	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-155	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	13.79	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

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Method

Property	Value	Unit	Conditions
Energy Above Hull(ΔEhull)	0.00450	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	-0.8356	eV/atom	DFT · OptB88vdW
↳	-1.058	eV/atom	Measured

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

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.

UI4 — Properties & Data | MatWorld

UI4

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental