Cu₂HgI₄ is a ternary intermetallic compound combining copper, mercury, and iodine—a material class rarely encountered in conventional engineering but studied primarily in solid-state physics and materials research contexts. It exhibits semiconductor or mixed-valence properties typical of copper-mercury halides, making it relevant to specialized photonic, optoelectronic, or thermoelectric research rather than mainstream structural or mechanical applications. This compound is of interest in niche academic and exploratory industrial settings where unusual electronic or optical behavior is being investigated, though practical deployment remains limited due to mercury's toxicity constraints and the material's likely brittleness.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K)2 entries | 18.24 | GPa | — | ||
| ↳ | 22.80 | GPa | — | ||
Poisson's Ratio(ν) | 0.3200 | - | — | ||
Shear Modulus(G)2 entries | 9.058 | GPa | — | ||
| ↳ | 9.840 | GPa | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 5.996 | kg/m³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 0.5140 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr)3 entries | 12.02 | - | — | ||
| ↳ | 12.02 | - | — | ||
| ↳ | 9.822 range 8.532–11.11median of 2 measurements | - | — | ||
Electronic Dielectric Tensor(ε∞) | Matrix (redacted) | - | — | ||
Total Dielectric Tensor(ε) | Matrix (redacted) | - | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Piezoelectric Modulus(eij)2 entries | 0.08579 | C/m² | — | ||
| ↳ | 0.3966 | C/m² | — | ||
Piezoelectric Stress Tensor(eij) | Matrix (redacted) | C/m² | — | ||
Seebeck Coefficient(S) | -109.5 | µV/K | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.000 | eV/atom | — | ||
Formation Energy(ΔHf) | -0.1685 | eV/atom | — |