| Property | Value |
|
||||||||
| Hardness* | 10,000 kg/mm2 | |||||||||
Strength, tensile |
>1.2 GPa | |||||||||
| Sound velocity* | 17,500 m/s | |||||||||
| Density | 3.52 g/cm3 | |||||||||
| Atom density* | 1.77 x 1023 1/cm3 | |||||||||
| Young's modulus* | 1140 GPa | |||||||||
| Poisson's ratio | 0.069 | |||||||||
| Thermal expansion coefficient | 1.1 ppm/K | |||||||||
| Thermal conductivity* | 20.0 W/cmK | |||||||||
| Debye temperature* | 2,220 K | |||||||||
| Refractive index | 2.41 | |||||||||
| Optical transparency | ||||||||||
| Loss tangent at 140 GHz | < 10-5 | |||||||||
| Dielectric constant | 5.7 | |||||||||
| Dielectric strength | 10,000,000 V/cm | |||||||||
| Electron mobility | 2,200 cm2/Vs | |||||||||
| Hole mobility | 1,600 cm2/Vs | |||||||||
| Bandgap | 5.45 eV | |||||||||
| Resistivity | 1013 - 1016 Wcm | |||||||||
| *highest value of all solid materials | ||||||||||
GENERAL PROPERTIES OF CVD DIAMOND
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