Piezoelectric response of nanoscale PbTiO3 in composite PbTiO3-CoFe2O4 epitaxial films

被引：17

作者：

Tan, Zhuopeng ^{[1
]}

Roytburd, Alexander L. ^{[1
]}

Levin, Igor ^{[2
]}

Seal, Katyayani ^{[3
]}

Rodriguez, Brian J. ^{[3
]}

Jesse, Stephen ^{[3
]}

Kalinin, Sergei ^{[3
]}

Baddorf, Art ^{[3
]}

机构：

[1] Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USA

[2] Natl Inst Stand & Technol, Div Ceram, Gaithersburg, MD 20899 USA

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

来源：

APPLIED PHYSICS LETTERS | 2008年 / 93卷 / 07期

关键词：

D O I：

10.1063/1.2969038

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Piezoelectric properties of PbTiO3 in 1/3PbTiO(3)-2/3CoFe(2)O(4) transverse epitaxial nanostructures on differently oriented SrTiO3 were analyzed using conventional and switching-spectroscopy piezoelectric force microscopy. The results confirmed that the individual PbTiO3 nanocolumns in the CoFe2O4 matrix exhibit a detectable piezoelectric response regardless of substrate orientation. For the {100} and {110} orientations, a bias of +/- 10 V produced ferroelectric domain switching; however, no switching was observed for the {111} films. Small values of piezoelectric constants d(zz)((100))approximate to 11 pm/V, d(zz)((110))approximate to 5 pm/V, and d(zz)((111))approximate to 3pm/V are attributed to the weak intrinsic response of the nano-PbTiO3 under strong mechanical and depolarizing-field constraints in the composite films. (c) 2008 American Institute of Physics.

引用

页数：3

共 14 条

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