2019年第66回応用物理学会春季学術講演会

講演情報

一般セッション(ポスター講演)

9 応用物性 » 9.1 誘電材料・誘電体

[10a-PA4-1~10] 9.1 誘電材料・誘電体

2019年3月10日(日) 09:30 〜 11:30 PA4 (屋内運動場)

09:30 〜 11:30

[10a-PA4-4] Fabrication of textured (Bi0.5K0.5)TiO3 piezoelectric ceramics via conventional sintering method

〇(D)Gopal Prasad Khanal1、Ichiro Fujii1、Sangwook Kim1、Shintaro Ueno1、Tohru S. Suzuki2、Satoshi Wada1 (1.Univ. of Yamanashi、2.NIMS)

キーワード:Grain-oriented, (Bi0.5K0.5)TiO3 Piezoelectric, Conventional Sintering

In this study, we focused on optimization of preparation conditions for the synthesis of <100>-oriented BKT ceramics via conventional sintering, using HTO-Bi2O3-KHCO3 and HTO-TiO2-Bi2O3-KHCO3 reaction system, where HTO refers to plate-like H1.08Ti1.73O4.nH2O template particles with uniform-morphology and high aspect ratio. The matrix TiO2 particles were used in the second reaction system beside the HTO template particles because the ratio of the matrix to the template particles strongly affects the grain orientation of the RTGG-processed ceramics. The grain-orientation imparted by the <100>-oriented BKT mesocrystal particles to other BKT-based solid solutions, with crystal symmetry other than tetragonal, could yield significant properties enhancement due to domain engineering.