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.
Rodriguez, Brian J.
|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||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|
|Appears in Collections:||Physics Research Collection|
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