Mercury iodide (HgI) is an inorganic semiconductor compound combining mercury and iodine, belonging to the II-VI semiconductor family. Historically, it has been investigated for gamma-ray and X-ray detection applications due to its high atomic number and resulting strong interaction with high-energy radiation, though it remains largely a research material with limited commercial deployment compared to more stable alternatives like cadmium zinc telluride (CZT). Engineers considering HgI should be aware that it is primarily of academic and specialized research interest; its toxicity, chemical instability, and processing challenges have limited practical industrial adoption, making it relevant mainly for niche radiation detection research rather than mainstream engineering applications.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | 23.63 | GPa | — | ||
Poisson's Ratio(ν) | 0.3500 | - | — | ||
Shear Modulus(G) | 11.58 | GPa | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 7.495 | kg/m³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg)2 entries | 2.370 | eV | — | ||
| ↳ | 1.476 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr) | 22.41 | - | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Piezoelectric Modulus(eij) | 0.000 | C/m² | — | ||
Seebeck Coefficient(S) | -225.7 | µV/K | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.02290 | eV/atom | — | ||
Formation Energy(ΔHf)2 entries | -0.3083 | eV/atom | — | ||
| ↳ | -0.09320 | eV/atom | — |