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Real space mapping of polarization dynamics and hysteresis loop formation in relaxor-ferroelectric PbMg1/3Nb2/3O3-PbTiO3 solid solutions
Date Issued
2010-08
Date Available
2013-12-13T09:21:59Z
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]
Other Sponsorship
Ministry of Science and Education of Ukraine
Center for Nanoscale Materials Sciences, USA
National Science Foundation, USA
Portuguese Foundation for Science and Technology
Office of Naval Research, USA
UCD Research
Type of Material
Journal Article
Publisher
AIP
Journal
Journal of Applied Physics
Volume
108
Issue
4
Start Page
042006-1
End Page
042006-11
Copyright (Published Version)
2010 American Institute of Physics
Language
English
Status of Item
Peer reviewed
ISSN
0021-8979 (Print)
1089-7550 (Online)
This item is made available under a Creative Commons License
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