首页|Nonlinear shear response in (K,Na)NbO_3-based lead-free piezoelectric ceramics
Nonlinear shear response in (K,Na)NbO_3-based lead-free piezoelectric ceramics
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NETL
NSTL
Trans Tech Publications Ltd
The piezoelectric shear response of 94.0(Ka_(0.5), Na_(0.5))NbO_3 (KNN) + 5.0LiNbO_3 (LN) + 0.5SrTiO_3 (ST) + 0.5BiFeO_3 (BF) ceramics was investigated by Laser Doppler Vibrometry (LDV) and resonance-antiresonance method. From resonance-antiresonance method, the piezoelectric d_(15) constant was obtained to be 273 pC/N. The shear strain obtained by LDV at the frequency of 150kHz showed strong nonlinearity. This suggested that the domain contribution to piezoelectric response in shear mode of KNN-LN-ST-BF ceramics existed at the operational frequency for the shear mode divices.
NETL
NSTL
Trans Tech Publications Ltd
