Piezoelectric Properties of Lead-Free (Na,Bi)TiO3--BaTiO3 (001) Epitaxial Thin Films around the Morphotropic Phase Boundary
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概要
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The piezoelectric properties and the crystallographic nature of ($1-x$)(Na,Bi)TiO3--$x$BaTiO3 (NBT--BT) thin films around the morphotropic phase boundary (MPB) composition ($x=0.05{\mbox{--}}0.10$) were studied. NBT--BT thin films were grown epitaxially on Pt(100)/MgO(100) substrates by RF magnetron sputtering and exhibited highly (001)-oriented single-phase perovskite with a tetragonal structure. A maximum piezoelectric coefficient $e_{31}$ of $-14.4$ C/m2 was obtained at the $x = 0.07$ composition of the tetragonal side near MPB ($x = 0.06$). These results indicate that NBT--BT thin films around the MPB are a promising lead-free replacement for Pb(Zr,Ti)O3 (PZT) based applications.
- 2010-11-25
著者
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Adachi Hideaki
Advanced Technology Research Laboratories Panasonic Corporation
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Adachi Hideaki
Advanced Technology Research Laboratories Matsushita Electric Ind. Co. Ltd.
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TANAKA Yoshiaki
Advanced Research Institute for Science and Engineering, Waseda University
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Fujii Eiji
Advanced Technology Research Laboratories Panasonic Corporation
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Harigai Takakiyo
Advanced Technology Research Laboratories, Panasonic Corporation, 3-4 Hikaridai, Seika, Kyoto 619-02
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Harigai Takakiyo
Advanced Technology Research Laboratories Panasonic Corporation
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Tanaka Yoshiaki
Advanced Technology Research Laboratories Panasonic Corporation
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Tanaka Yoshiaki
Advanced Research Centar For Science And Engineering Waseda University
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