Lithium Fluoride
LiF
Lithium fluoride is used as a diffracting crystal in X-ray spectrometry. It has a large energy gap and its crystals are transparent to short wavelength ultraviolet radiation.
Absorption Coefficient (cm-1): 5.9x10-3 at 4.3µ
Apparent Elastic Limit (MPa): 11.2
Bulk Modulus (K) (GPa): 62.03
Cleavage Planes: (100)
Density (g.cm-3): 2.64
Dielectric Constant: 0.1
Elastic Coefficient C11: 112
Elastic Coefficient C12: 46
Elastic Coefficient C44: 63.5
Hardness (knoop): 108
Melting Point (K): 1121
Poisson Ratio: 0.326
Reflection Loss (%): 5.2 at 0.6µ
Refractive Index: 1.40 at 0.6µ
Restrahlen Peak (µ): 25
Shear Modulus (G) (GPa): 55.14
Solubility (g/100g H2O): 0.27 at 293K
Specific Heat Capacity (J·kg·m-1·K-1): 1562
Stability: Stable
Structure: Cubic
Thermal Conductivity (W·m-1·K-1): 11.3 at 314K
Youngs Modulus (E) (GPa): 64.97
Thermal Expansion (K-1 at 300K): 37x10-6
Transmission Range (µ): 0.12-8.5