Non-Kolmogorov-Avrami-Ishibashi Switching Dynamics in Nanoscale Ferroelectric Capacitors

被引：52

作者：

Kim, Yunseok ^{[1
]}

Han, Hee ^{[2
]}

Lee, Woo ^{[3
]}

Baik, Sunggi ^{[2
]}

Hesse, Dietrich ^{[1
]}

Alexe, Marin ^{[1
]}

机构：

[1] Max Planck Inst Microstruct Phys, D-06120 Halle, Saale, Germany

[2] Pohang Univ Sci & Technol, Dept Mat Sci & Engn, Pohang 790784, South Korea

[3] KRISS, Taejon 305340, South Korea

来源：

NANO LETTERS | 2010年 / 10卷 / 04期

关键词：

Ferroelectrics; PFM; switching dynamics; nanoscale capacitor; DOMAIN NUCLEATION;

D O I：

10.1021/nl9038339

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Switching dynamics of nanoscale ferroelectric capacitors with a radius of 35 nm were investigated using piezoresponse force microscopy. Polarization switching starts with only one nucleation event occurring only at the predetermined places. The switching dynamics of nanoscale capacitors did not follow the classical Kolmogorov-Avrami-Ishibashi model. On the basis of the consideration of two separate (nucleation and growth) steps within a nonstatistical finite system. we have proposed a model which is in good agreement with the experimental results.

引用

页码：1266 / 1270

页数：5

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