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Products › Materials › Strontium Fluoride (SrF2)
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Strontium Fluoride (SrF2) |
| Strontium Fluoride has only specialist applications. Optically, Strontium Fluoride has properties intermediate to Calcium and Barium Fluoride. |
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Product Data |
| Transmission Range : |
0.15 to 11 μm |
| Refractive Index : |
1.439 at 0.55 μm (1) |
| Reflection Loss : |
6.3% at 0.55 μm (2 surfaces) |
| Absorption Coefficient : |
<1 x 10-3 cm-1 at 5 μm |
| Reststrahlen Peak : |
46 μm |
| dn/dT : |
-12 x 10-6 /°C |
| dn/dμ = 0 : |
n/a |
| Density : |
4.24 g/cc |
| Melting Point : |
1450°C |
| Thermal Conductivity : |
1.42 W m-1 K-1 at 298K |
| Thermal Expansion : |
18.4 x 10-6 /°C at 293K |
| Hardness : |
Knoop 154 (100) & 140 (110) |
| Specific Heat Capacity : |
543 J Kg-1 K-1 |
| Dielectric Constant : |
7.69 at 2 MHz |
| Youngs Modulus (E) : |
89.91 GPa |
| Shear Modulus (G) : |
34.6 GPa |
| Bulk Modulus (K) : |
24.65 GPa |
| Elastic Coefficients : |
C11=124; C12=45; C44=31.7 |
| Apparent Elastic Limit : |
36.5 MPa (5300 psi) |
| Poisson Ratio : |
0.25 |
| Solubility : |
0.012g/100g water at 27°C |
| Molecular Weight : |
125.62 |
| Class/Structure : |
Cubic FCC, CaF2, Fm3m, (111) cleavage |
To download this data or our MSDS safety data sheet as a pdf, please click on the links at the top of the page. To expand the transmission graphs, please click on the image.
Click to access current Strontium Fluoride Stock Windows
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Refractive Index |
| µm |
No |
µm |
No |
µm |
No |
| 0.15 |
1.594 |
0.20 |
1.504 |
0.31 |
1.45725 |
| 0.41 |
1.44556 |
0.51 |
1.44029 |
0.61 |
1.43740 |
| 0.71 |
1.43560 |
0.81 |
1.43435 |
0.91 |
1.43343 |
| 1.01 |
1.43269 |
1.51 |
1.43003 |
2.01 |
1.42761 |
| 3.01 |
1.42159 |
4.01 |
1.41337 |
5.01 |
1.40269 |
| 6.01 |
1.38934 |
7.01 |
1.37308 |
8.01 |
1.35362 |
| 9.1 |
1.3283 |
10.1 |
1.3800 |
11.1 |
1.2686 |
| 12.35 |
1.3002 |
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Product Notes |
Strontium fluoride is produced by the vacuum Stockbarger growth technique.
REFERENCES:
(1) Handbook of Optical Constants, ed Palik, V3, ISBN 0-12-544423-0
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Data provided is extracted from our technical handbook of materials. While every attempt has been made to verify the source of the information, Crystran Ltd accept no responsibility for accuracy of data |
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