PAM XIAMEN offers Magnesium Fluoride MgF2 Crystal.

Magnesium fluoride, MgF2, crystals have been widely used as windows, lenses, and prisms for wavelength from 110 nm to 7.5 um. It is the most suitable material for ArF excimer lasers used in pulsed laser deposition techniques. For its excellent ulta-violet transmittance at 193nm, it is effective as optical polarizing element.

PAM XIAMEN offers the following choices:
Customized crystal growth and machining
High quality MgF2 blank crystal materials in discs, plates, rods, customized for customers
High quality MgF2 VUV windows for ArF Excimer Laser
Customized MgF2 optics for IR and VUV applications
MgF2 viewport windows for Infrared thermography from 8 um to 14 um.

maximum diameter: 170 mm, can custom to 10 x 10 mm, 20 x 20 mm, 30 x30 mm, 40x40m
Clear aperture: 85%
Surface flatness: λ/4 at 633 nm
Surface quality: 20/10

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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Found in 1990, Xiamen Powerway Advanced Material Co., Ltd (PAM-XIAMEN) is a leading manufacturer of semiconductor material in China.PAM-XIAMEN develops advanced crystal growth and epitaxy technologies, manufacturing processes, engineered substrates and semiconductor devices.PAM-XIAMEN’s technologies enable higher performance and lower cost manufacturing of semiconductor wafer.

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