k32-type low-frequency bimorph with giant electromechanical coupling factor.

Authors :: Liu, Gang
Lei, Shiming
Jiang, Wenhua
Zhu, Jiaqi
Cao, Wenwu
Source :: Physica Status Solidi. A: Applications & Materials Science. Oct2013, Vol. 210 Issue 10, p2183-2187. 5p.
Publication Year :: 2013
Abstract: Piezoelectric bimorph based on k32 mode of ternary 0.24Pb(In1/2Nb1/2)O3-0.46Pb(Mg1/3Nb2/3)O3-0.30PbTiO3 (0.24PIN--0.46PMN--0.30PT) single crystal poled along [011] c has been fabricated and tested. The bimorph features very large electromechanical coupling factor (0.80) and very low working frequency (less than half of PZT based bimorph for the same dimensions) owing to the super large lateral extensional piezoelectric constant d32 and large elastic compliances [ABSTRACT FROM AUTHOR]