Probing the role of single defects on the thermodynamics of electric-field induced phase transitions

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Title: Probing the role of single defects on the thermodynamics of electric-field induced phase transitions
Authors: Kalinin, S. V.
Jesse, S.
Rodriguez, Brian J.
et al.
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Date: Apr-2008
Online since: 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.
Funding Details: Other funder
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
Keywords: Defect-domain interactionsPolarization reversal processesFerroelectric materialsElectromechanical hysteresis loops
DOI: 10.1103/PhysRevLett.100.155703
Language: en
Status of Item: Peer reviewed
Appears in Collections:Physics Research Collection

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