Customer Corner

k-Space Associates, Inc.

Material Properties

Material Chemical
Symbol		 Bulk Modulus Young’s Modulus Poisson’s Ratio Biaxial Modulus
Copper Cu 140 GPa 110 GPa 0.343 81.91 GPa
Float Glass Soda-lime Silica 43 GPa 72 GPa 0.23 93.51 GPa
Galium Arsenide GaAs 75.5 GPa 82.68 GPa 0.31 119.8 GPa
Galium Nitride GaN (zinc blend) 204 GPa 449.6 GPa
Indium Phosphide InP 71 GPa 61 GPa 0.36 95.31 GPa
Sapphire Al2O3 240 GPa 335 GPa 0.25 562 GPa (R-Plane)
Silicon Si 101.97 GPa 130.91 GPa 0.28 181.82 GPa
Silicon Carbide 4H – SiC 220 GPa
Silicon Carbide 6H – SiC 97 GPa
Silicon Carbide 3C – SiC 441 GPa
Material Chemical
Symbol		 950nm
Reflectance		 950nm
Emissivity		 470nm
Reflectance		 470nm
Emissivity
Galium Arsenide GaAs 0.313 0.687 0.438 0.562
Galium Antimony GaSb 0.39 0.61 0.48 0.52
Indium Phosphide InP 0.305 0.695 0.349 0.651
Sapphire Al2O3 0.075 0.925 0.078 0.922
Silicon Si 0.326 0.674 0.419 0.581
Material Chemical
Symbol		 n at 950nm k at 950nm n at 470nm k at 470nm
Aluminum Arsenide AlAs 2.974 0 3.51 0
Galium Antimony GaSb 4.3 0.34 4.3 2.3
Indium Phosphide InP 3.37 0.2 3.818 0.5
Galium Nitride GaN 2.37 0 2.47 0
Silicon Si 3.63 0.01 4.55 0.02
Galium Phosphide GaP 3.17 0 3.6 0.01