HfI4 — Properties & Data | MatWorld

HfI4

Name: HfI4
Brand: MatWorld

ceramic

· HfI4

Hafnium iodide (HfI₄) is an inorganic ceramic compound composed of hafnium and iodine, belonging to the halide ceramics family. This material is primarily of research and specialized laboratory interest rather than mainstream industrial production, with applications in nuclear fuel chemistry, specialized optical coatings, and high-temperature chemical synthesis where hafnium's refractory properties and iodine's reactivity are leveraged. Engineers considering HfI₄ would typically be working in advanced nuclear fuel development, materials research, or specialized chemical processing environments where extreme thermal stability and hafnium's neutron absorption characteristics are critical design drivers.

nuclear fuel researchhigh-temperature ceramicshalide synthesismaterials characterizationchemical vapor deposition precursorrefractory applications

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	5.624	kg/m³	DFT · OptB88vdW

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	2.052	eV	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	6.161	-	DFT · OptB88vdW
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000491	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00103	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-301.5	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	372.3	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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Method

Property	Value	Unit	Conditions
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	-0.9153	eV/atom	DFT · OptB88vdW
↳	-1.023	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.

HfI4

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental