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Characterization of Transverse Piezoelectric Properties of c-Axis Oriented PbTiO3 Thin Films

In this study, we evaluated transverse piezoelectric properties of c-axis oriented PbTiO 3 (PT) thin films from the actuation of the PT/MgO unimorphs. The PT films were grown on Pt/MgO substrates using rf-sputtering technique. X-ray diffraction measurements revealed that the PT films exhibited highl...

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Published in:Ferroelectrics 2005-01, Vol.327 (1), p.91-95
Main Authors: Kanno, Isaku, Kogure, Shunsuke, Tabata, Daiki, Nakano, Kazuki, Suzuki, Takaaki, Kotera, Hidetoshi, Wasa, Kiyotaka
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container_issue 1
container_start_page 91
container_title Ferroelectrics
container_volume 327
creator Kanno, Isaku
Kogure, Shunsuke
Tabata, Daiki
Nakano, Kazuki
Suzuki, Takaaki
Kotera, Hidetoshi
Wasa, Kiyotaka
description In this study, we evaluated transverse piezoelectric properties of c-axis oriented PbTiO 3 (PT) thin films from the actuation of the PT/MgO unimorphs. The PT films were grown on Pt/MgO substrates using rf-sputtering technique. X-ray diffraction measurements revealed that the PT films exhibited highly c-axis orientation with a-axis domains, suggesting epitaxial growth of the PT films. The piezoelectric characteristics of the PT films were estimated by the measurements of tip deflection of the unimorph cantilevers composed of PT films and MgO substrates. The PT cantilevers showed excellent linear piezoelectric deflection even with the application of large reverse voltage to the polar direction. The stable piezoelectricity of the PT films is attributed to not only large coercive field larger than their break down field but the highly c-axis orientation of PT films. We estimated piezoelectric coefficient e 31 of the PT thin films and obtained large transverse piezoelectricity of e 31 = −1.77 C/m 2 which is two times larger than that of the PT single crystals.
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The PT films were grown on Pt/MgO substrates using rf-sputtering technique. X-ray diffraction measurements revealed that the PT films exhibited highly c-axis orientation with a-axis domains, suggesting epitaxial growth of the PT films. The piezoelectric characteristics of the PT films were estimated by the measurements of tip deflection of the unimorph cantilevers composed of PT films and MgO substrates. The PT cantilevers showed excellent linear piezoelectric deflection even with the application of large reverse voltage to the polar direction. The stable piezoelectricity of the PT films is attributed to not only large coercive field larger than their break down field but the highly c-axis orientation of PT films. 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subjects c-axis orientation
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Dielectric, piezoelectric, ferroelectric and antiferroelectric materials
Dielectrics, piezoelectrics, and ferroelectrics and their properties
Exact sciences and technology
Niobates, titanates, tantalates, pzt ceramics, etc
PbTiO
Physics
piezoelectric
Piezoelectricity and electromechanical effects
thin films
title Characterization of Transverse Piezoelectric Properties of c-Axis Oriented PbTiO3 Thin Films
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