Probing the role of single defects on the thermodynamics of electric-field induced phase transitions
|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.||Permanent link:||http://hdl.handle.net/10197/5203||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||Funding Details:||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||Keywords:||Defect-domain interactions; Polarization reversal processes; Ferroelectric materials; Electromechanical hysteresis loops||DOI:||10.1103/PhysRevLett.100.155703||Language:||en||Status of Item:||Peer reviewed||This item is made available under a Creative Commons License:||https://creativecommons.org/licenses/by-nc-nd/3.0/ie/|
|Appears in Collections:||Physics Research Collection|
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