Electrical Properties and Piezoelectric Properties of CaBi2Ta2O9-Based Ceramics
Electrical and piezoelectric properties of CaBi2Ta2O9-based ceramics have been studied. Temperature dependence of dielectric properties indicated that the Curie temperature, TC, was 923°C. Coercive field, EC, and remanent polarization, Pr, became saturated with increasing temperature. It is expected that higher-temperature than 250°C could promote the domain wall motion during the poling treatment. From resonance and antiresonance measurements, piezoelectric properties such as the maximum phase, max, electromechanical coupling factor, k33, and piezoelectric g constant, g33, were 86.1º, 0.085 and 8.4 × 10-3 V∙m/N, at room temperature, respectively.
Tadashi Takenaka, Hajime Haneda, Kazumi Kato, Masasuke Takata and Kazuo Shinozaki
T. Tokusu et al., "Electrical Properties and Piezoelectric Properties of CaBi2Ta2O9-Based Ceramics", Key Engineering Materials, Vols. 421-422, pp. 46-49, 2010