[16p-K307-1~17] 9.1 Dielectrics, ferroelectrics

4:15 PM - 4:30 PM JST(7:15 AM - 7:30 AM UTC)

[16p-K307-10] Synchrotron X-ray diffraction experiments of BT-BMT-BF under electric field

〇(M2)Motoki Aruga¹, Ryo Furukawa¹, Shota Nakagawa², Sangwook Kim¹, Hyunwook Nam³, Shintaro Ueno², Ichiro Fujii², Shogo Kawaguchi⁴, Shintaro Kobayashi⁴, Satoshi Wada², Yoshihiro Kuroiwa¹ (1.Hiroshima Univ., 2.Univ. of Yamanashi, 3.Tokyo Univ. of Science, 4.JASRI)

Keywords:

Lead-free piezoelectric material,Electric field,Synchrotron X-ray diffraction experiments

BaTiO₃–Bi(Mg_0.5Ti_0.5)O₃–BiFeO₃ (BT–BMT–BF) ceramics with a pseudocubic symmetry exhibited excellent ferroelectricity and piezoelectricity, attracting attention as an alternative to Pb-based ceramics. The application of an electric field causes off-center Bi ions at the corner positions of the unit cell to partially ordered to the electric field direction, resulting in lattice distortion and the emergence of superior piezoelectric and ferroelectric properties. In this study, synchrotron X-ray diffraction experiments under DC and AC electric fields were conducted at SPring-8 to measure lattice distortion, and the results are reported here.