K₂GeF₆ is an inorganic ceramic compound belonging to the family of metal fluorides, specifically a potassium germanium fluoride. This material is primarily of research and specialized industrial interest rather than a commodity ceramic, valued for its optical transparency in the infrared region and its chemical stability in corrosive fluorine-rich environments. Applications include optical windows for infrared spectroscopy, specialized laser components, and nuclear fuel processing where resistance to fluorinating agents is critical; it may also serve as a precursor or component in advanced ceramics and glass-ceramics where germanium and fluoride chemistry provides unique thermal or chemical properties unavailable from conventional oxide ceramics.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | 36.40 | GPa | — | ||
Poisson's Ratio(ν) | 0.2800 | - | — | ||
Shear Modulus(G) | 19.10 | GPa | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 3.453 | kg/m³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 5.966 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr)3 entries | 8.510 | - | — | ||
| ↳ | 6.746 | - | — | ||
| ↳ | 5.124 range 2.109–8.139median of 2 measurements | - | — | ||
Electronic Dielectric Tensor(ε∞) | Matrix (redacted) | - | — | ||
Total Dielectric Tensor(ε) | Matrix (redacted) | - | — | ||
Piezoelectric Modulus(eij) | 0.000 | C/m² | — | ||
Seebeck Coefficient(S) | -174.9 | µV/K | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.000 | eV/atom | — | ||
Formation Energy(ΔHf) | -2.894 | eV/atom | — |