Pure low-frequency flexural mode of [011] c poled relaxor-PbTiO 3 single crystals excited by k 32 mode

Gang Liu, Wenhua Jiang, Jiaqi Zhu, Wenwu Cao

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Abstract

Rhombohedral phase relaxor-PbTiO 3 solid solution single crystals poled along [011] c exhibits superior lateral extensional piezoelectric response, which enables the excitation of a pure low frequency flexural mode with a bridge-type electrode configuration. For the ternary 0.24Pb(In 1/2Nb 1/2) O 3-0.46Pb(Mg 1/3Nb 2/3)O 3-0.30PbTiO 3 single crystal poled along [011] c, the electromechanical coupling factor of the flexural mode reached as high as 0.66, and the resonance frequency of this mode can be easily made in kHz range, making it possible to fabricate very small size low frequency sensors and actuators. We have delineated theoretically the coupling between flexural mode and other modes and realized a strong pure flexure mode.

Original languageEnglish (US)
Article number213501
JournalApplied Physics Letters
Volume100
Issue number21
DOIs
StatePublished - May 21 2012

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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