| ZnO | AlN | LiNbO3 |
Structure | Wurtzite | Wurtzite | Trigonal |
Space Group | C6v4-P63mc | C6v4-P63mc | R3c |
e13 (C∙m−2) | −0.567 | −0.580 | 0.194 |
e33 (C∙m−2) | 1.320 | 1.550 | 1.309 |
Young’s modulus (GPa) | 210 [29] | 344 [30] | 170 [31] |
Dipole moment μ (Debey) | 0.345 [32] | 0.096 [33] | 4.40 [34] |