TY - JOUR
KW - Phase transitions
KW - Defects
KW - Polarization
KW - Electric field effects
KW - Thermodynamics
KW - Hysteresis loops
KW - Spectroscopic analysis
KW - Built-in fields
KW - Electrochemical reactions
KW - Pinning centers
KW - Polarization reversal
AU - S.V Kalinin
AU - S Jesse
AU - B.J Rodriguez
AU - Y.H Chu
AU - Ramamoorthy Ramesh
AU - E.A Eliseev
AU - A.N Morozovska
AB - 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. © 2008 The American Physical Society.
BT - Physical Review Letters
DO - 10.1103/PhysRevLett.100.155703
LA - eng
M1 - 15
N1 - cited By 69
N2 - 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. © 2008 The American Physical Society.
PY - 2008
T2 - Physical Review Letters
TI - Probing the role of single defects on the thermodynamics of electric-field induced phase transitions
VL - 100
SN - 00319007
ER -