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AgClBr Crystals and fibers


Physical & Optical Parameters

Lattice constant (A) Melting point, oC Refractive index, at 10.6 µm Refractive index, at 2.94 µm Refractive index, at 0.6328 µm Bulk absorption 10-4cm-1
AgCl 5.55 457 1.98 2 2.05 1.8
AgCl0.95Br0.05 5.5617 449 1.99 2.01 2.07 1.7
AgCl0.9Br0.1 5.5733 443 2 2.02 2.08 1.6
AgCl0.7Br0.3 5.6193 424 2.05 2.07 2.12 1.4
AgCl0.5Br0.5 5.6646 412 2.08 2.1 2.17 1.2
AgCl0.3Br0.7 5.7092 412 2.11 2.12 2.2 0.9
AgCl0.1Br0.9 5.7531 421 2.14 2.15 2.23 0.7
AgCl0.05Br0.95 5.764 427 2.15 2.16 2.24 0.6
AgBr 5.7748 432 2.16 2.17 2.25 0.5

AgCl, AgCl0.5Br0.5 & AgBr Crystals – Physical & Optical Parameters

AgCl AgCl0.5Br0.5 AgBr
Thermal conductivity, Wm-1K-1 at 3*102K 1.15 1.1 1.21
Thermal expansion, 10-6/oC at 3*102K 31 30 30
Young modulus, Gpa 19.98 14 31.97
Microhardness Knoop 9.5 Vickers 10 Knoop 7
Density, g/cm3 5.59 6.39 6.44
dN/dT, 10-5/oC at 10.6 µm -0.61 -1.5
Transmission range, µm 0.4-25 0.4-25 0.45-35
Loss at 2.94 µm, db/m - 3 -
Loss at 10.6 µm, db/m - 0.5 -
Specific heat capacity, J Kg m-1K-1 355 - 292
Dielectric constant, 1MHz 12.3 - 13.1
Solubility in water at 20 oC, 10-6g/100g 12 - 150
Transparency, µm 0.4-30 - 0.45-35
Molecular weight, gr/mole 143.3 - 187.78
Absorption coefficient at 10.6 µm, 10-4 cm-1 2 - 0.4
Fresnel reflection, % 20.4 - 21
Energy gap, eV 3.06 - 2.9
Madelung energy, eV 9.068 - 8.714
Heat capacity, cal/mole*K
at 298oK 12.14 - 12.53
at 373oK 13.31 13.68
Lattice frequency, cm-1 103 - 80

AgClxBr1-x Fibers – Tel Aviv University Experimental Results:

The fatigue strain limits of the fibers
Cycles to failure
The absorption spectral dependence (9.2 - 10.8 micron)
The dependence of the absorption coefficient of the AgBr crystals on the relative deformation
Attenuation
Visible Absorption Edges
Infrared Absorption Edges

AgCl & AgBr Properties – Internet Sites:

Silver Bromide: Mechanical, structural and electronic properties (University College London Site)

Silver Chloride: Mechanical, structural and electronic properties (University College London Site)

Silver Bromide: Optical, physical and chemical properties (Crystran Site)

Silver Chloride: Optical, physical and chemical properties (Crystran Site)

Optran® MIR Fibers (Ceramoptec Site)