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Ferroelectric-like hysteresis loop originated from non-ferroelectric effects

Title
Ferroelectric-like hysteresis loop originated from non-ferroelectric effects
Authors
Kim, B[Kim, Bora]Seol, D[Seol, Daehee]Lee, S[Lee, Shinbuhm]Lee, HN[Lee, Ho Nyung]Kim, Y[Kim, Yunseok]
DGIST Authors
Lee, S[Lee, Shinbuhm]
Issue Date
2016-09-05
Citation
Applied Physics Letters, 109(10), 141-145
Type
Article
Article Type
Article
Keywords
Converse Piezoelectric EffectsElectromechanical StrainElectrostatic SeparatorsElectrostaticsFerroelectric And Piezoelectric PropertiesFerroelectric EffectsFerroelectricityHysteresisHysteresis LoopsOptical SwitchesPiezoelectricityPiezoresponsePiezoresponse Force MicroscopyPolarizationPolarization SwitchingScanning Probe MicroscopyVoltage Sweep
ISSN
0003-6951
Abstract
Piezoresponse force microscopy (PFM) has provided advanced nanoscale understanding and analysis of ferroelectric and piezoelectric properties. In PFM-based studies, electromechanical strain induced by the converse piezoelectric effect is probed and analyzed as a PFM response. However, electromechanical strain can also arise from several non-piezoelectric origins that may lead to a misinterpretation of the observed response. Among them, electrostatic interaction can significantly affect the PFM response. Nonetheless, previous studies explored solely the influence of electrostatic interaction on the PFM response under the situation accompanied with polarization switching. Here, we show the influence of the electrostatic interaction in the absence of polarization switching by using unipolar voltage sweep. The obtained results reveal that the electromechanical neutralization between piezoresponse of polarization and electrostatic interaction plays a crucial role in the observed ferroelectric-like hysteresis loop despite the absence of polarization switching. Thus, our work can provide a basic guideline for the correct interpretation of the hysteresis loop in PFM-based studies. © 2016 Author(s).
URI
http://hdl.handle.net/20.500.11750/2201
DOI
10.1063/1.4962387
Publisher
American Institute of Physics Publishing
Files:
There are no files associated with this item.
Collection:
Emerging Materials ScienceETC1. Journal Articles


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