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Calcium Fluoride ( CaF2)
Calcium Fluoride ( CaF2) is grown by
vacuum Stockbarger technique in diameter up yo about 200 mm. Calcium Fluoride
single crystal is an optical material with
Hightransmittance in ultraviolet,visible and infrared regions of the spectrum.
It is use in Laser, IR,UV optics as windows, lenses, prisms, and substrates
etc..
Main properties;
Structure Cubic
Lattice constant 5.462
Cleavage <111>
Density
3.18g/cm3
Mohs hardness 4
Young¡¯s modulus 146.1
GPa direction <100>
89.9 Gpa
direction <111>
Melting point 1360
℃
Thermal expansion coefficient
(16.2 ~ 19.4) x 10-6/℃
Thermal conductivity at 36℃
9.71 W/M.K
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