[18p-C301-1~11] 9.1 Dielectrics, ferroelectrics

1:15 PM - 1:30 PM JST(4:15 AM - 4:30 AM UTC)

[18p-C301-2] Unique temperature-dependence of the external electric field for 90° polarization rotation of ferroelectric BaTiO₃

〇Tomohiro Ogawa¹, Hikaru Azuma¹, Shuji Ogata¹, Ryo Kobayashi¹, Masayuki Uranagase¹, Takahiro Tsuzuki¹, Yuta Takahashi¹, Takumi Nozaki¹ (1.Nagoya Inst. Tech.)

Keywords:

ferroelectrics,barium titanate,polarization rotation

Polarization switching, crucial to memory applications, is nonlinear phenomenon whose microscopic mechanism is yet to be well understood. In the case of polarization switching induced by an external electric field, 180° switching, where a domain with polarization antiparallel to the spontaneous polarization grows, is common, but two successive 90° polarization rotations have been reported. In this study, we analyzed the temperature dependence of 90° polarization rotation and 180° switching in BaTiO₃ using molecular dynamics simulations.