Real space mapping of polarization dynamics and hysteresis loop formation in relaxor-ferroelectric PbMg1/3Nb2/3O3-PbTiO3 solid solutions

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Title: Real space mapping of polarization dynamics and hysteresis loop formation in relaxor-ferroelectric PbMg1/3Nb2/3O3-PbTiO3 solid solutions
Authors: Rodriguez, Brian J.
Jesse, S.
Morozovska, A. N.
et al.
Permanent link: http://hdl.handle.net/10197/5172
Date: Aug-2010
Abstract: Polarization switching in ergodic relaxor and ferroelectric phases in the PbMg1/3Nb2/3O3-PbTiO3 (PMN-PT) system is studied using piezoresponse force microscopy, single point electromechanical relaxation measurements, and voltage spectroscopy mapping. The dependence of relaxation behavior on voltage pulse amplitude and time is found to follow a universal logarithmic behavior with a nearly constant slope. This behavior is indicative of the progressive population of slow relaxation states, as opposed to a linear relaxation in the presence of a broad relaxation time distribution. The role of relaxation behavior, ferroelectric nonlinearity, and the spatial inhomogeneity of the tip field on hysteresis loop behavior is analyzed in detail. The hysteresis loops for ergodic PMN-10\%PT are shown to be kinetically limited, while in PMN with larger PT content, true ferroelectric hysteresis loops with low nucleation biases are observed. (C) 2010 American Institute of Physics. [doi:10.1063/1.3474961]
Type of material: Journal Article
Publisher: AIP
Copyright (published version): 2010 American Institute of Physics
Keywords: Relaxor ferroelectrics;Atomic force microscopy;Polarization;Electrical hysteresis;Relaxation times;Nucleation;Spatial analysis;Ferroelectric domain structure
DOI: 10.1063/1.3474961
Language: en
Status of Item: Peer reviewed
Appears in Collections:Physics Research Collection

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