TABLE II.
PMN-PT | PZT4 | PZT5H | |
---|---|---|---|
Density, ρ (kg/m3) | 8000 | 7500 | 7500 |
Sound Velocity, vp (m/s) | 3480 | 4100 | 3850 |
Acoustic Impedance, Zc (MRayls) | 27.8 | 30.8 | 28.9 |
Electrical-Mechnical Coupling Coefficient, k33 | 0.91 | 0.70 | 0.75 |
Relative Dielectric Constant, εT33 | 5400 | 1300 | 3400 |
Calculated fsc for t = 0.5 mm (MHz) | 1.57 | 3.07 | 2.69 |