Lithium Fluoride (LiF)

Wir sind führender Hersteller und Lieferant von Forschungsmaterialien

Crystallographic

Syngony Cubic
Symmetry Class m3m
Lattice Constants a = 4.026 Å
c = a
Cleavability (100), perfect
 

Optical

Refractive Index at ne 1.3931
Refractive Index at nF' - nC' 0.0040
Thermal Coefficient of Refractive Index at 3.39 microns for ±60 °C (-1.25) ... (-1.51) x 10-5
Transmission Range, microns 0.12 - 6.5
 

Thermal

Thermal Linear Expansion, °C-1
for ±60 °C
(28.1 ... 34.8) x 10-6
Thermal Conductivity, W/(m * °C)
at 38 °C
14.2
Specific Heat Capacity, J/(kg * °C) 1.5617 x 103
Melting Point, °C 870
 

Mechanical

Density, g/cm3 at 20 °C 2.60
Mohs Hardness 4
Vickers Microhardness, Pa 98 x 107
Constants of Elastic Compliance, Pa-1 S11 = 11.32 x 10-12
S12 = -3.06 x 10-12
S44 = 15.91 x 10-12
Young Modulus (E), Pa  
   in <100> direction 8.84 x 1010
   in <111> direction 14.22 x 1010
Shear Modulus (G), Pa  
   in <100> direction 4.09 x 1010
   in <111> direction 6.29 x 1010
Poisson Ratio 0.270
 

Chemical

Molecular Weight 25.94
Solubility
in water, gram/100 cm3 0.27
in acids soluble
 

Ref. Index vs. Wavelength l

Wavelength, Microns Refractive Index
0.2 1.439
0.5 1.3943
1.0 1.3871
2.0 1.3788
3.0 1.3666
4.0 1.3494
5.0 1.3266
6.0 1.2975
7.0 1.262
8.0 1.218
9.0 1.165
10.0 1.101
 

Internal Transmittance t i (l) vs. Wavelength l

Wavelength, Microns Internal Transmittance
0.2 0.90
0.5 0.98
1.0 0.97
3.0 0.97
5.0 0.88
6.0 0.65
7.0 0.14

Custom sizes and specifications are available on request.

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1 18
H
2 13 14 15 16 17
He
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N
O
F
Ne
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Cl
Ar
K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se
Br
Kr
Rb Sr Y Zr Nb Mo
Tc
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Xe
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Po
At
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Fr
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Ac
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