Hg2GeSe4

ceramic
· Hg2GeSe4

Hg₂GeSe₄ is a quaternary chalcogenide ceramic compound composed of mercury, germanium, and selenium—a material class primarily explored in semiconducting and photonic applications rather than structural engineering. This compound belongs to the family of mercury-based chalcogenides, which are investigated for nonlinear optical properties, infrared transmission, and potential optoelectronic device functionality; however, it remains largely a research material without established high-volume industrial production. Engineers would consider this compound for specialized infrared optics, radiation detection windows, or experimental photonic devices where mercury chalcogenide's unique optical and electronic characteristics outweigh the challenges of toxicity, synthesis complexity, and limited material standardization.

infrared optics and windowsnonlinear optical devicesradiation detectionphotonic research applicationssemiconductor research

Compliance & Regulations

?Conflict Free?RoHS?REACH?TSCA?Prop 65
Units:
siimperial
PropertyValueUnitConditionsSource
Bulk Modulus(K)
5,085
ksi—
Poisson's Ratio(ν)
0.3000
-—
Shear Modulus(G)
2,565.7
ksi—
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Density(ρ)
0.2477
lb/in³—
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Band Gap(Eg)
0.2860
eV—
Dielectric Constant (Relative Permittivity)(εr)2 entries
48.42
-—
↳
31.11
range 27.10–35.13median of 2 measurements
-—
Magnetic Moment(μB)
0.000
µB—
Piezoelectric Modulus(eij)
0.8476
C/m²—
Seebeck Coefficient(S)
-38.94
µV/K—
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.
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Energy Above Hull(ΔEhull)
0.000
eV/atom—
Formation Energy(ΔHf)
-0.1259
eV/atom—
Verified Unverified Low confidence (<80%) Link to source

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.