[20a-A309-1~9] 6.1 Ferroelectric thin films

11:00 AM - 11:15 AM JST(2:00 AM - 2:15 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[20a-A309-8] Heat treatment effect of (Bi, K)TiO₃ based thin film prepared by hydrothermal method

〇Taichi Murashita¹, Yuma Takahashi¹, Rurika Kubota¹, Yoshiharu Ito², Yasuhiro Fujii³, Akitoshi Koreeda³, Kazuki Okamoto¹, Hiroshi Funakubo¹ (1.Tokyo Tech., 2.Nihon Univ, 3.Ritsumeikan Univ.)

Keywords:

Ferroelectric material,Hydrothermal method,(Bi,K)TiO3

Our group successfully prepared high-quality (Bi, K)TiO3 thin films with polar oriented axis by hydrothermal method in 2022. The tetragonality (c/a) of the obtained films was much larger than previously reported values. DFT calculations by Jiang et al. showed that the tetragonality of (Bi, K)TiO3 increases when Bi and K are ordered in a specific orientation. In this study, we report on our investigation of the effect of heat treatment on (Bi, K)TiO3 prepared by hydrothermal method.