Table 1 Room temperature dielectric constant (Ɛr), Tangent loss, polarization (P), strain (S), piezoelectric constant (d33), normalized strain (d33*) and electromechanical coupling factor (Kp) values of ceramic samples.
BNT-ST | Density (g/cm3) | Dielectric Constant (Er) at RT | Tangent Loss | Pr (µC/cm2) | Pmax (µC/cm2) | Smax (%) (Bipolar) | d*33 (ρm/V) | d33 (pC/N) | Kp (%) |
|---|---|---|---|---|---|---|---|---|---|
ST10 | 5.58 | 2169 | 0.05 | 30.5 | 39.4 | 0.09 | 175 | 142 | 27.66 |
ST26 | 5.62 | 2620 | 0.05 | 7.1 | 36.9 | 0.20 | 500 | 8 | — |
t-ST26-ST10 | 5.86 | 1760 | 0.06 | 9.7 | 32.2 | 0.30 | 890 | 23 | 14.96 |
r-ST26-ST10 | 5.85 | 1852 | 0.04 | 7.5 | 38.9 | 0.26 | 700 | 18 | 15.01 |
