K32‐type low‐frequency bimorph with giant electromechanical coupling factor. Issue 10 (22nd July 2013)

• Record Type: Journal Article
• Authors: Liu, Gang; Lei, Shiming; Jiang, Wenhua; Zhu, Jiaqi; Cao, Wenwu
• Is Part Of: Physica status solidi. Volume 210:Issue 10(2013:Oct.)
• Page Start: 2183
• Page End: 2187
• Publication Date: 2013-07-22
• Subjects: Solid state physics -- Periodicals; Solids -- Industrial applications -- Periodicals; 530.41
• DOI: 10.1002/pssa.201330003
• Languages: English
• ISSNs: 1862-6300

Abstract

<abstract abstract-type="main" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <sec id="pssa201330003-sec-0001" sec-type="section"> <p>Piezoelectric bimorph based on <italic>k</italic>₃₂ 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]_{<italic>c</italic>} 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 <italic>d</italic>₃₂ and large elastic compliances <alternatives><inline-graphic mimetype="image" xlink:href="ark:/27927/pgg3ss5mbkr" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /><mml:math altimg="urn:x-wiley:18626300:media:pssa201330003:pssa201330003-math-0001" display="inline" overflow="scroll" xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msubsup><mml:mi>s</mml:mi><mml:mrow><mml:mn>22</mml:mn></mml:mrow><mml:mi>E</mml:mi></mml:msubsup></mml:mrow></mml:math></alternatives> of the crystal. The bimorph design can be used for miniaturized low‐frequency electromechanical sensors and actuators.</p> </sec> </abstract>