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Ferroelectric-like hysteresis loop originated from non-ferroelectric effects
- Ferroelectric-like hysteresis loop originated from non-ferroelectric effects
- 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
- Applied Physics Letters, 109(10), 141-145
- Article Type
- Converse Piezoelectric Effects; Electromechanical Strain; Electrostatic Separators; Electrostatics; Ferroelectric And Piezoelectric Properties; Ferroelectric Effects; Ferroelectricity; Hysteresis; Hysteresis Loops; Optical Switches; Piezoelectricity; Piezoresponse; Piezoresponse Force Microscopy; Polarization; Polarization Switching; Scanning Probe Microscopy; Voltage Sweep
- 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).
- American Institute of Physics Publishing
- Related Researcher
Lee, Shin Buhm
Multifunctional films; Experimental condensed matter physics
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- Department of Emerging Materials Scienceshinbuhmlee Lab1. Journal Articles
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