Enhanced Piezoelectric Properties of Potassium Niobate Single Crystals by Domain Engineering
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概要
- 論文の詳細を見る
The engineered domain configuration was induced into potassium niobate (KNbO3) crystals, and the piezoelectric properties were investigated as a function of domain size. First, single-domain treatment was investigated, and a combination of chemical etching and 2-step electric poling treatment was effective. Using the single-domain crystals, all piezoelectric related constants were determined. On the basis of these piezoelectric constants, the $d_{\textit{31}}$ and $d_{\textit{32}}$ surfaces were calculated. The piezoelectric properties of $[001]_{c}$ oriented KNbO3 single-domain crystals were measured and were completely consistent with the calculated properties. Finally, the engineered domain configurations were induced into KNbO3 crystals by the control of the temperature and the electric-field along the $[001]_{c}$ direction. The piezoelectric properties of these KNbO3 crystals with the engineered domain configurations showed much higher values than those of the single-domain crystal. Moreover, the piezoelectric properties increased with decreasing the domain sizes of the engineered domain configuration.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2004-09-15
著者
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KUMAGAI Hirohiko
Electronic Materials Group, Asahi Techno Glass Co.
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Kakemoto Hirofumi
Department Of Applied Physics Faculty Of Science Science University Of Tokyo
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Muraoka Kazuma
Department Of Metallurgy And Ceramics Science Tokyo Institute Of Technology
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Tsurumi Takaaki
Department Of Inorganic Materials Faculty Of Engineering Tokyo Institute Of Technology
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Wada Satoshi
Department Of Applied Physics Faculty Of Engineering Osaka City University
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Kumagai Hirohiko
Electronic Materials Group, Asahi Techno Glass Co., 1-50-1 Gyouda, Funabashi, Chiba 273-0044, Japan
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Wada Satoshi
Department of Applied Chemistry, Tokyo University of Agriculture & Technology,
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