Orientation dependence of transverse piezoelectric properties of 0.70Pb(Mg1/3Nb2/3)O3-0.30PbTiO3 single crystals

Jue Peng; Hao-su Luo; Di Lin; Hai-qing Xu; Tian-hou He; Wei-qing Jin
December 2004
Applied Physics Letters;12/20/2004, Vol. 85 Issue 25, p6221
Academic Journal
In this letter, we present our investigation of transverse piezoelectric performance in 0.70Pb(Mg1/3Nb2/3)O3-0.30PbTiO3 (0.70PMN-0.30PT) single crystals with different cuts using a resonance technique. We give the report on the finding of ultrahigh k31 and d31 values of 95.4% and -2517 pC/N, respectively. However, this unusual transverse piezoelectric property is only obtained in crystals with the polarization (thickness) and vibration (length) directions along the <110> and <001> directions, respectively. The 0.70PMN-0.30PT crystal with this cut shows significantly great potential for applications in high-performance transverse-mode piezoelectric devices, such as medical array ultrasonic transducers and actuators.


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