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

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

doi:10.1002/pssa.201330003

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

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

Research output: Contribution to journal › Article › peer-review

Abstract

Piezoelectric bimorph based on k₃₂ mode of ternary 0.24Pb(In_1/2Nb_1/2)O₃-0.46Pb(Mg _1/3Nb_2/3)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 language	English (US)
Pages (from-to)	2183-2187
Number of pages	5
Journal	Physica Status Solidi (A) Applications and Materials Science
Volume	210
Issue number	10
DOIs	https://doi.org/10.1002/pssa.201330003
State	Published - Oct 1 2013

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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10.1002/pssa.201330003

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title = "K32-type low-frequency bimorph with giant electromechanical coupling factor",

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.",

author = "Gang Liu and Shiming Lei and Wenhua Jiang and Jiaqi Zhu and Wenwu Cao",

year = "2013",

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T1 - K32-type low-frequency bimorph with giant electromechanical coupling factor

AU - Liu, Gang

AU - Lei, Shiming

AU - Jiang, Wenhua

AU - Zhu, Jiaqi

AU - Cao, Wenwu

PY - 2013/10/1

Y1 - 2013/10/1

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AB - 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.

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