Table 1.
| Structural Properties | Density (g/cm3) | 3.257 |
| Elastic modulus (GPa) | 330 | |
| Elastic constant C11 (GPa) | 410 ± 10 | |
| Elastic constant C12 (GPa) | 149 ± 1 | |
| Elastic constant C13 (GPa) | 99 ± 4 | |
| Poisson’s ratio | 0.22 | |
| Crystal structure | Wurtzite | |
| Lattice constant (Å) |
a = 3.112 c = 4.982 |
|
| Hardness (Kg/mm2) | 1100 | |
| Water absorption | None | |
| Optical Properties | Density of states in conduction band (cm−3) | 4.1 × 1018 |
| Effective hole mass | mhz = 3.53 m0 mhx = 10.42 m0 |
|
| Density of states in valence band (cm−3) | 4.8 × 1020 | |
| Optical phonon energy (meV) | 113 | |
| Refractive index (visible to IR) | ~2.15 | |
| Electrical Properties | Breakdown field (V/cm) | 1.2–1.8 × 106 |
| Mobility of electrons/holes (cm2/V·s) | 135/14 | |
| Dielectric constant (static/high frequency) | 8.5–9.14/4.6–4.84 | |
| Energy band gap (eV) | 6.13–6.23 | |
| Resistivity (Ohm·cm) | 1015 | |
| Thermal Properties | Thermal conductivity (W/m·°K) | 140–180 |
| Coefficient of thermal expansion (×10−6/°C) | 4.2–5.3 | |
| Debye temperature (°K) | 1150 | |
| Melting Point (°C) | 2200 | |
| Piezoelectric Properties | Piezoelectric coefficient e15 (C/m2) | −0.33~−0.48 |
| Piezoelectric coefficient e31 (C/m2) | −0.38~−0.82 | |
| Piezoelectric coefficient e33 (C/m2) | 1.26–2.1 | |
| Relative permittivity coefficient ɛ11 | 9 | |
| Relative permittivity coefficient ε22 | 9 | |
| Relative permittivity coefficient ε33 | 11 |