K32-type low-frequency bimorph with giant electromechanical coupling factor

Gang Liu, Shiming Lei, Wenhua Jiang, Jiaqi Zhu, Wenwu Cao

Research output: Contribution to journalArticle

Abstract

Piezoelectric bimorph based on k32 mode of ternary 0.24Pb(In1/2Nb1/2)O3-0.46Pb(Mg 1/3Nb2/3)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 s22E of the crystal. The bimorph design can be used for miniaturized low-frequency electromechanical sensors and actuators.

Original languageEnglish (US)
Pages (from-to)2183-2187
Number of pages5
JournalPhysica Status Solidi (A) Applications and Materials Science
Volume210
Issue number10
DOIs
StatePublished - Oct 1 2013

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Electrical and Electronic Engineering
  • Materials Chemistry

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