Lithium fluoride (LiF) is an inorganic ceramic compound that forms a cubic crystalline structure with high ionic bonding. It is primarily used in optical and thermal applications where transparency, chemical inertness, and thermal stability are critical, particularly in infrared spectroscopy windows, laser optics, and specialized detector systems. LiF is chosen over alternative optical ceramics when broadband IR transmission, high UV resistance, and extreme chemical durability are required, though its hygroscopic nature and higher cost limit its use to applications where these performance advantages justify the premium.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K)3 entries | 10,135.4 | ksi | — | ||
| ↳ | 10,135.4 | ksi | — | ||
| ↳ | 10,722.6 | ksi | — | ||
Elastic Compliance Tensor(Sij) | Matrix (redacted) | 1/GPa | — | ||
Elastic Anisotropy(AU) | 0.1587 | - | — | ||
Elastic Stiffness Tensor(Cij) | Matrix (redacted) | ksi | — | ||
Poisson's Ratio(ν)2 entries | 0.2068 | - | — | ||
| ↳ | 0.2100 | - | — | ||
Shear Modulus(G)3 entries | 7,388.7 | ksi | — | ||
| ↳ | 7,388.7 | ksi | — | ||
| ↳ | 8,017.7 | ksi | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 0.09617 | lb/in³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg)2 entries | 11.70 | eV | — | ||
| ↳ | 9.479 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr)2 entries | 8.817 | - | — | ||
| ↳ | 5.697 range 2.083–9.311median of 2 measurements | - | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Piezoelectric Modulus(eij) | 0.000 | C/m² | — | ||
Seebeck Coefficient(S) | -189.6 | µV/K | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.03590 | eV/atom | — | ||
Formation Energy(ΔHf)2 entries | -3.197 | eV/atom | — | ||
| ↳ | -3.155 | eV/atom | — |