Nonlinear piezoelectricity in epitaxial ferroelectrics at high electric fields

被引：53

作者：

Grigoriev, Alexei ^{[1
]}

Sichel, Rebecca ^{[1
]}

Lee, Ho Nyung ^{[2
]}

Landahl, Eric C. ^{[3
]}

Adams, Bernhard ^{[3
]}

Dufresne, Eric M. ^{[3
]}

Evans, Paul G. ^{[1
]}

机构：

[1] Univ Wisconsin, Dept Mat Sci & Engn, Madison, WI 53706 USA

[2] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA

[3] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 02期

关键词：

D O I：

10.1103/PhysRevLett.100.027604

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Nonlinear effects in the coupling of polarization with elastic strain have been predicted to occur in ferroelectric materials subjected to high electric fields. Such predictions are tested here for a PbZr0.2Ti0.8O3 ferroelectric thin film at electric fields in the range of several hundred MV/m and strains reaching up to 2.7%. The piezoelectric strain exceeds predictions based on constant piezoelectric coefficients at electric fields from approximately 200 to 400 MV/m, which is consistent with a nonlinear effect predicted to occur at corresponding piezoelectric distortions.

引用

页数：4