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Probing the role of single defects on the thermodynamics of electric-field induced phase transitions
Author(s)
Date Issued
2008-04
Date Available
2013-12-19T09:56:05Z
Abstract
The kinetics and thermodynamics of first order transitions are universally controlled by defects that act as nucleation sites and pinning centers. Here we demonstrate that defect-domain interactions during polarization reversal processes in ferroelectric materials result in a pronounced fine structure in electromechanical hysteresis loops. Spatially resolved imaging of a single defect center in multiferroic BiFeO3 thin film is achieved, and the defect size and built-in field are determined self-consistently from the single-point spectroscopic measurements and spatially resolved images. This methodology is universal and can be applied to other reversible bias-induced transitions including electrochemical reactions.
Sponsorship
Other funder
Other Sponsorship
Division of Materials Sciences and Engineering and the Center for Nanophase Materials
Sciences, Office of Basic Energy Sciences, U.S.
Department of Energy, and by the
Division of Materials Sciences and Engineering under
Contract No. DE-AC02-05CH11231.
Type of Material
Journal Article
Publisher
American Physical Society
Journal
Physical Review Letters
Volume
100
Issue
15
Start Page
155703
Copyright (Published Version)
2008 The American Physical Society
Language
English
Status of Item
Peer reviewed
This item is made available under a Creative Commons License
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