[9p-N201-1~14] 6.1 Ferroelectric thin films

3:30 PM - 3:45 PM JST(6:30 AM - 6:45 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[9p-N201-9] Enhancement of electro-optic response by strain engineering for c-axis oriented BaTiO₃ films

〇(M1)Hinata Sawaki¹, Shinya Kondo¹, Tomoaki Yamada^1,2 (1.Nagoya Univ., 2.Science Inst. MDX)

Keywords:

ferroelectric thin film,barium titanate,electro-optic effect

BaTiO₃ attracts great attention as a promising electro-optic (EO)material due to its excellent EO coefficient. Therefore, optical modulation with BaTiO₃ is thought to be able to reduce energy consumption. However, because reported EO coefficient of BaTiO₃ is a1/a2 domain structure, EO coefficient isn't utilized completely. In this research, by fabricating c-axis oriented BaTiO₃ films I measured higher EO coefficient than a previous study. In addition, a previous study reported that calculation based on the Landau Devonshire theory indicated proper strain improved EO response. Therefore, I evaluated BaTiO₃'s EO coefficient on other substrates.