[15p-K503-1~15] 6.1 Ferroelectric thin films

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

[15p-K503-2] Sweep frequency dependence of the coercive field based on the EKAI model

〇Shigeki Sakai^1,2, Mitsue Takahashi¹ (1.AIST, 2.Kyutech)

Keywords:

ferroelectrics,polarization reversal

Understanding transient response characteristics of ferroelectric polarization reversal is important for memory device application. We already proposed the Extended Kolmogorov-Avrami-Ishibashi (EKAI) model. Regarding polarization vs electric field (P-E) hysteresis curves of metal/ferroelectric/metal capacitors, there are no fixed ideal curves. P-E curves vary with measurement conditions. This presentation reveals the behavior that the coercive fields of P-E curves change with sweep frequency of the electric field by means of analytical- and numerical- methods based on the EKAI model.