Depolarizing-field-mediated 180° switching in ferroelectric thin films with 90° domains

被引：100

作者：

Roelofs, A ^{[1
]}

Pertsev, NA

Waser, R

Schlaphof, F

Eng, LM

Ganpule, C

Nagarajan, V

Ramesh, R

机构：

[1] Rhein Westfal TH Aachen, Inst Werkstoffe Elektrotech, D-52056 Aachen, Germany

[2] Russian Acad Sci, AF Ioffe Physicotech Inst, St Petersburg 194021, Russia

[3] Forschungszentrum Julich, Inst Festkorperforsch, D-52425 Julich, Germany

[4] Tech Univ Dresden, Inst Angew Photophys, D-01062 Dresden, Germany

[5] Univ Maryland, Mat Sci Res & Engn Ctr, College Pk, MD 20742 USA

来源：

APPLIED PHYSICS LETTERS | 2002年 / 80卷 / 08期

关键词：

Bottom electrodes - Depolarizing fields - Electric field induced - In-plane polarization - Initial orientation - Out-of plane - Piezoresponse force microscopy - Transient polarization;

D O I：

10.1063/1.1448653

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Switching of the out-of-plane and in-plane polarizations in polydomain epitaxial PbZr0.2Ti0.8O3 thin films is studied using three-dimensional piezoresponse force microscopy (PFM). It is found that, under an electric field induced between the PFM tip and the bottom electrode, the 180degrees switching occurs in both c and a domains. After the removal of this field, the spontaneous reversal of the out-of-plane and in-plane polarizations back to the initial orientations takes place, evolving via heterogeneous development of antiparallel 180degrees domains. The switching of in-plane polarization inside a domains and the preferential formation of reversed 180degrees domains at 90degrees domain walls are explained by the effects of the depolarizing fields caused by transient polarization charges appearing on these domain walls. (C) 2002 American Institute of Physics.

引用

页码：1424 / 1426

页数：3