Property | Value |
---|---|
Hardness | 10,000 kg mm-2 |
Strength, tensile | >1.2 GPa |
Strength, compressive | >110 GPa |
Sound velocity | 18,000 m s-1 |
Density | 3.52 g cm-3 |
Young's modulus | 1.22 GPa |
Poisson's ratio | 0.2 |
Thermal expansion coefficient | 0.0000011 K-1 |
Thermal conductivity | 20.0 W cm-1K-1 |
Thermal shock parameter | 30,000,000 W m-1 |
Debye temperature | 2,200 K |
Optical index of refraction (at 591 nm) | 2.41 |
Optical transmissivity (from nm to far IR) | 225 |
Loss tangent at 40 Hz | 0.0006 |
Dielectric constant | 5.7 |
Dielectric strength | 10,000,000 V cm-1 |
Electron mobility | 2,200 cm2 V-1 s-1 |
Hole mobility | 1,600 cm2 V-1 s-1 |
Electron saturated velocity | 27,000,000 cm s-1 |
Hole saturated velocity | 10,000,000 cm s-1 |
Work function | small and negative (almost zero on [111] surface) |
Bandgap | 5.45 eV |
Resistivity | 1013 - 1016 W cm |
From: J.E. Field, The Properties of Natural and Synthetic Diamond, (Academic Press, London, 1992).
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