首页|Electrical Properties and Piezoelectric Properties of CaBi_2Ta_2O_9-Based Ceramics

Electrical Properties and Piezoelectric Properties of CaBi_2Ta_2O_9-Based Ceramics

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  • Trans Tech Publications Ltd
Electrical and piezoelectric properties of CaBi_2Ta_2O_9-based ceramics have been studied. Temperature dependence of dielectric properties indicated that the Curie temperature, T_C, was 923℃. Coercive field, E_C, and remanent polarization, P_r became saturated with increasing temperature. It is expected that higher-temperature than 250℃ could promote the domain wall motion during the poling treatment. From resonance and antiresonance measurements, piezoelectric properties such as the maximum phase, θ_(max), electromechanical coupling factor, K_(33), and piezoelectric g constant, g_(33), were 86.1°, 0.085 and 8.4 × 10~(-3) V·m/N, at room temperature, respectively.

sensorcurie temperatureCaBi_2Ta_2O_9piezoelectric propertiescoercive field

Toji Tokusu、Hirokazu Miyabayashi、Yuji Hiruma、Hajime Nagata、Tadashi Takenaka

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Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan

2010

10.4028/www.scientific.net/KEM.421-422.46

Key engineering materials

Key engineering materials

ISSN：1013-9826
年,卷(期)：2010.421/422
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