TITLE

Dynamics of nanoscale polarization backswitching in tetragonal lead zirconate titanate thin film

AUTHOR(S)
Fu, Desheng; Suzuki, Kazuyuki; Kato, Kazumi; Suzuki, Hisao
PUB. DATE
March 2003
SOURCE
Applied Physics Letters;3/31/2003, Vol. 82 Issue 13, p2130
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The dynamics of polarization backswitching in highly oriented Pb(Zr[SUB0.3]Ti[SUB0.7])O[SUB3] (PZT) thin films has been studied in nanoscale using piezoresponse scanning force microscopy (SFM). Our measurements reveal that a SFM-written domain with diameter about 200 nm in PZT films loses its polarization through both the sidewise and forward backswitching. Both of these sidewise and forward domain wall motions follow a stretched exponential law. However, the characteristic time Ï„ of forward backswitching are about ten times of that sidewise motion. The time dependence of sidewise domain wall velocity indicates that there is a time dependence of activation energy of the barrier that domain motions encounter.
ACCESSION #
9377412

 

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