MgF2 substrate

The main performance parameters

Crystal Structure

Tetragonal system

Lattice Constant

a=4.64Å; c=3.06Å 

Melting Point

1255℃

Density

3.18 g/cm3

Growth method

Bridgeman, Czochralski method

Mohs Hardness

4

Refractive Index

no=1.3777; ne=1.3895

Transmission Band

0.12-8.5μm

Specific heat capacity

1003 J Kg/mK

Color deviation Hf-Hc

0.00455

Temperature coefficient
(dh/dt x 10^-6)

10.6 @0.8 M

Dielectric constant

4.87(para) 5.54(perp) at 1MHz

Thermal Conductivity:

21(para) 33.6(perp) W/m.K at 300K

Thermal Expansion Coefficient (/℃)

13.7(para) 8.9(perp)x 10-6 /℃┴C 

Cleavage Plane

<110>

MgF2 application

Infrared window, prism, lens

Packing

class-100 clean bag, in class-1000 clean room