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Silver Bromide (AgBr) |
| Silver Bromide is useful material for very deep IR applications where sensitivity to moisture is a problem. Silver Bromide crystal growth was developed relatively recently by the standards of many IR materials. The parameters of Silver Bromide have not been researched as thoroughly as those of Silver Chloride. This soft crystal deforms under heat and pressure and can be forged in polished dies to create IR windows and lenses. |
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Product Data |
| Transmission Range : |
0.45 to 35 μm (1) |
| Refractive Index : |
2.167 at 10 μm (1)(2) |
| Reflection Loss : |
23.9% at 10 μm (2 surfaces) |
| Absorption Coefficient : |
Not known |
| Reststrahlen Peak : |
112.7 μm |
| dn/dT : |
Not known |
| dn/dμ = 0 : |
Not known |
| Density : |
6.473 g/cc |
| Melting Point : |
432 °C |
| Thermal Conductivity : |
1.21 W m-1 K-1 at 273 K |
| Thermal Expansion : |
30 x 10-6/°C at 273 K |
| Hardness : |
Knoop 7 |
| Specific Heat Capacity : |
292 J Kg-1 K-1 |
| Dielectric Constant : |
13.1 at 1MHz (2) |
| Youngs Modulus (E) : |
31.97 GPa |
| Shear Modulus (G) ; |
Not Known |
| Bulk Modulus (K) : |
44.03 GPa |
| Elastic Coefficients : |
C11=56.3 C12=32.3 C44=7.25 |
| Apparent Elastic Limit : |
26.2 MPa |
| Poisson Ratio : |
Not Known |
| Solubility : |
12 x 10-6g/100g water at 20°C |
| Molecular Weight : |
187.78 |
| Class/Structure : |
Cubic FCC, NaCl, Fm3m, No cleavage, cold flows |
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.
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Refractive Index |
| µm |
No |
µm |
No |
µm |
No |
| 0.391 |
2.416 |
0.477 |
2.33 |
0.496 |
2.313 |
| 0.55 |
2.27 |
0.6 |
2.25 |
0.65 |
2.24 |
| 0.781 |
2.205 |
9.926 |
2.167 |
12.66 |
2.162 |
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Product Notes |
Silver Bromide is grown in small ingots by sealed ampoule Stockbarger techniques. Silver Bromide is malleable and deep yellow, it darkens in sunlight, but less readiliy than Silver Chloride.
(1) Handbook of Optical Constants, ed Palik, V3, ISBN 0-12-544423-0
(2) White; Optical Properties of Silver Bromide. J.Opt.Soc. Am. V62, N2 (1973)
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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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