Effects of lateral and substrate constraint on the piezoresponse of ferroelectric nanostructures

被引：7

作者：

Bernal, A. ^{[1
,2
]}

Tselev, A. ^{[3
]}

Kalinin, Sergei ^{[3
]}

Bassiri-Gharb, Nazanin ^{[1
,4
]}

机构：

[1] Georgia Inst Technol, George W Woodruff Sch Mech Engn, Atlanta, GA 30332 USA

[2] Rose Hulman Inst Technol, Mech Engn Dept, Terre Haute, IN 47803 USA

[3] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA

[4] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA

来源：

APPLIED PHYSICS LETTERS | 2012年 / 101卷 / 11期

关键词：

THICKNESS DEPENDENCE; THIN-FILMS; SIZE; INFILTRATION; FABRICATION;

D O I：

10.1063/1.4751343

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The effects of lateral constraint and substrate clamping on piezoresponse of ferroelectric materials at small scale are quantitatively evaluated in PbZr0.52Ti0.48O3 nanotubes. Lateral clamping results in a reduction of the extrinsic contributions to the piezoresponse by almost an order of magnitude at low and intermediate fields. Similarly, at aspect ratios below 3:1 (height to width), constraint to the substrate leads to a drastic reduction of the extrinsic contributions to the piezoelectric response of the ferroelectric nanostructures. Both behaviors can be explained by an increased energy requirement for formation and motion of the ferroelastic non-180 degrees domain walls in mechanically constrained systems. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4751343]

引用

页数：4

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