Vibration-Stress Dependence of Electromechanical Characteristics for Electrostrictive Pb(Mg1/3Nb2/3)O3–Based Ceramics
スポンサーリンク
概要
- 論文の詳細を見る
The mechanical quality factor $Q_{\text{m}}$ of a normal ferroelectric, piezoelectric ceramic vibrator decreases and heat is given off, when the vibrator is continuously driven at a high level of vibration-stress under a resonant mode. It has been thought that irreversible motions of ferroelectric non-180° domain walls cause this behavior. The effect of ferroelectric domain structure on the vibration-stress dependence of electromechanical characteristics was studied using relaxor ferroelectric electrostrictive ($1-x$)PbTiO3-$x$Pb(Mg1/3Nb2/3)O3 ($x=1.00$, 0.95, 0.90) ceramics. The $Q_{\text{m}}$ for the paraelectric crystal phase composition at room temperature is about five times higher than that for hard lead zirconate titanate (PZT) and the decrease of $Q_{\text{m}}$ with vibration-stress is suppressed at high stress levels. The piezoelectric $d_{31}$ constant is almost the same as that of hard PZT. Electrostrictive ceramics are therefore superior electromechanical vibrator materials for high power applications.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2005-09-15
著者
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UMEDA Mikio
Department of Electronic Control Engineering, Nagaoka National College of Technology
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Wada Takahiro
Department Of Intelligent Mechanical Systems Faculty Of Engineering Kagawa University
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Hayano Shuji
Lead Techno Co., Ltd. (c/o Ryukoku University, REC), 1-5 Yokotani, Seta Oe, Otsu 520-2194, Japan
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Umeda Mikio
Department of Electronic Control Engineering, Nagaoka National College of Technology, 888 Nishikatakai, Nagaoka-Shi, Niigata 940-8532, Japan
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Takahashi Sadayuki
Lead Techno Corporation, Rumieru-Ikoma 201, 447-2 Koake, Ikoma-Shi, Nara 630-0201, Japan
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Takahashi Sadayuki
Lead Techno Corporation, Ikoma, Nara 630-0201, Japan
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Hayano Shuji
Lead Techno Corporation, Rumieru-Ikoma 201, 447-2 Koake, Ikoma-Shi, Nara 630-0201, Japan
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Wada Takahiro
Department of Chemistry, Tokyo Metropolitan University
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