Presentation Information

9:15 AM - 9:30 AM JST(12:15 AM - 12:30 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[8a-F212-2]Effect of Bi/K Nonstoichiometry on the Crystal Structure and Electrical Properties of (Bi_0.5K_0.5)_1+xTiO₃Ceramics

〇Yoshiki Saito¹, Daichi Watanabe², Desheng Fu^1,2,3 (1.GSIST,Shizuoka Univ., 2.Fac.Eng.Shizuoka Univ., 3.GSST,Shizuoka Univ.)

Keywords:

piezoelectric,(Bi0.5K0.5)TiO3,ferroelectric

(Bi_0.5K_0.5)TiO₃ (BKT) is a lead-free piezoelectric material that has attracted considerable attention for high-temperature applications. However, the fabrication of dense ceramics is challenging because of the volatilization of Bi and K during sintering. In this study, high-density (Bi_0.5K_0.5)_1+xTiO₃ ceramics were fabricated by Spark Plasma Sintering (SPS), and the effects of Bi/K nonstoichiometry and heat-treatment conditions on their properties were investigated. The obtained ceramics exhibited relative densities higher than 95%. In addition, increasing x enhanced the ferroelectric phase transition and improved both ferroelectric and piezoelectric properties.

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Presentation Information

[8a-F212-2]Effect of Bi/K Nonstoichiometry on the Crystal Structure and Electrical Properties of (Bi0.5K0.5)1+xTiO3 Ceramics

Keywords:

[8a-F212-2]Effect of Bi/K Nonstoichiometry on the Crystal Structure and Electrical Properties of (Bi_0.5K_0.5)_1+xTiO₃Ceramics