[22a-12P-1~11] 9.1 Dielectrics, ferroelectrics

9:00 AM - 9:15 AM JST(12:00 AM - 12:15 AM UTC)

[22a-12P-1] Control of Polarization Switching Properties of Acceptor-doped Ferroelectric BaTiO₃ Utilizing Defect Dipoles

〇Hiroki Matsuo¹, Yasuaki Honda¹, Kenta Kuwata¹, Yuji Noguchi¹, Masashi Utsunomiya², Takao Sada², Yoshihiro Fujioka², Takumi Oda³, Koji Kimura³, Koichi Hayashi³, Naohisa Happo⁴ (1.Kumamoto Univ., 2.Kyocera Corp., 3.Nagoya Inst. Tech., 4.Hiroshima City Univ.)

Keywords:

ferroelectrics,defect complex,energy storage

We report a method to control the polarization properties of acceptor-doped ferroelectric BaTiO₃ by utilizing the interaction between spontaneous polarization and defect dipoles. We obtain pinched polarization hysteresis loops with high energy storage density and effective relative permittivity. In the presentation, we will discuss the formation mechanism of defect dipoles and their influence on domain-switching behavior.