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MgF2 (Magesium Flouride) material
  • MgF2 (Magesium Flouride) material
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Product Details

MgF2 (Magesium Flouride) material

MgF2 (Magesium Flouride) is transparent over a extremely wide range of wavelengths .windows, lenses ,and prisms made of this materials can be used over the entire range of wavelengths from 0.12μm(vacuum ultraviolet ) to 8.0μm (infrared). High quality synthetic VUV grade MgF2 is quite expensive. Low grade MgF2 is sometimes used in the infrared but it is inferior to CaF2. MgF2 is tough and works and polishes well, but it is slightly birefringent and should be cut with the optic axis perpendicular to the plane of the window or lens.

We can provide deep ultraviolet ( excimer level ), ultraviolet and infrared level calcium fluoride materials and components.
We have all kinds of orientation, such as <111>、<110>、<100> etc.
We have all shapes of material, such as round rod、square plate、step、prism、wedge and so on.
We have all kinds of conventional plate、spherical and wedge in our stock.

We have the size of 4mm-200mm mono crystal and poly crystal materials and optical element

Optical Properties
Transmission Range 110 nm to 7.5 μm
Transmittance >90% at 193 nm to 6 μm
Refractive Index No=1.37608; Ne=1.38771 (at 0.7μm)
Reflection Loss 5.2% at 0.6 μm (both surfaces)
Residual Radiation Peak 20 nm
Absorption Coefficient 0.04 cm-1 at 2.7 μm
dn/dT 2.3 x 10-6 /℃ parallel c-axis
1.7 x 10-6 /℃ perpendicular c-axis
Physical Properties
Density 3.18 g/cm3
Melting Point 1255℃
Thermal Conductivity 0.3 Wm-1K-1 at 300K
Thermal Expansion 13.7 x 10-6 /℃ parallel c-axis
8.9 x 10-6 /℃ perpendicular c-axis
Knoop Hardness 415 with 100g indenter (kg/mm2)
Specific Heat Capacity 1003 J/(kg.k)
Dielectric Constant 1.87  at 1MHz parallel c-axis
1.45  at 1MHz perpendicular c-axis
Youngs Modulus (E) 138.5 GPa
Shear Modulus (G) 54.66 GPa
Bulk Modulus (K) 101.32 GPa
Elastic Coefficient C11=164; C12=53; C44=33.7
C13=63; C66=96
Apparent Elastic Limit 49.6 MPa (7200 psi)
Poisson Ratio 0.276
Chemical Properties
Solubility 0.0002 g/ 100g water at 20℃
Molecular Weight 62.32
Structure Tetragonal Crystal
Cleavage Plane -110

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