Magnesium Fluoride (MgF2)

Wir sind führender Hersteller und Lieferant von Forschungsmaterialien

Crystallographic

Syngony Tetragonal
Symmetry Class 4/mmm
Lattice Constants a = 4.64 Å
c = 3.06
Cleavability (100),(110) perfect
 

Thermal

Refractive Index at ne 1.3786
Refractive Index at nF' - nC' 1.3904
Refractive Index at n10.6 0.0034
Refractive Index at n8.0 - n12.5 0.0110
Thermal Coefficient of Refractive Index at 3.39 microns for ±60 °C bo = (0.15 ... 0.10) x 10-5
be = (0.15 ... 0.10) x 10-5
Transmission Range, microns 0.13 - 7.0
 

Thermal

Thermal Linear Expansion, °C-1
for ±60 °C
 
^ to c-axis (6.23 ... 9.25) x 10-6
|| to c-axis (10.86 ... 14.54) x 10-6
Specific Heat Capacity, J/(kg * °C) 0.9200 x 103
Melting Point, °C 1255
 

Mechanical

Density, g/cm3 at 20 °C 3.18
Mohs Hardness 6
Vickers Microhardness, Pa  
^ to c-axis 441 x 107
|| to c-axis 289 x 107
Constants of Elastic Compliance, Pa-1 S11 = 12.45 x 10-12
S12 = -7.16 x 10-12
S13 = -1.66 x 10-12
S33 = 5.94 x 10-12
S44 = 17.54 x 10-12
S66 = 10.53 x 10-12
Young Modulus (E), Pa  
^ to c-axis 16.91 x 1010
|| to c-axis 7.97 x 1010
Shear Modulus (G), Pa  
^ to c-axis 5.71 x 1010
|| to c-axis 9.52 x 1010
Poisson Ratio  
|| to c-axis 0.577
 

Chemical

Molecular Weight 62.32
Solubility  
in water, gram/100 cm3 0.0076
in acids soluble
 

Ref. Index vs. Wavelength l

Wavelength, Microns Refractive Index no Refractive Index ne
0.2 1.4231 1.4367
0.5 1.3797 1.3916
1.0 1.3736 1.3852
2.0 1.3686 1.3797
3.0 1.3618 1.3724
4.0 1.3525 1.3622
5.0 1.3400 1.3487
6.0 1.3242 1.3315
7.0 1.3044 1.3101
 

Internal Transmittance t i (l) vs. Wavelength l

Wavelength, Microns Internal Transmittance
0.2 0.95
0.5 0.97
1.0 0.97
3.0 0.97
5.0 0.97
6.0 0.91
7.0 0.54
8.0 0.12

Custom sizes and specifications are available on request.

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H
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