Hg2IO — Properties & Data | MatWorld

Hg2IO

ceramic

· JVASP-14038· Hg2IO

Hg2IO is a mixed-valence mercury iodide oxide ceramic compound combining mercury, iodine, and oxygen in its crystal structure. This material belongs to the family of heavy-metal halide ceramics and appears primarily in research contexts rather than established industrial production, where it is investigated for potential applications in radiation detection, photonic materials, and specialized optical systems that exploit the strong X-ray absorption and electronic properties characteristic of mercury-containing compounds.

radiation detection researchX-ray imaging materialsphotonic crystalsscintillator developmentspecialized optics (experimental)materials physics research

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.3098	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	0.8830	eV	DFT · OptB88vdW
↳	1.720	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	20.04	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	8.690	-	DFT · OptB88vdW
↳	5.543	-	DFT · TBmBJ
Electron Effective Mass(m*e)	0.4833	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	2.097	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.000	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000795	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00100	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-116.8	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	320.7	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	28.87	%	DFT · TBmBJ

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)	0.01670	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.1639	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.

Hg2IO

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental