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Ferroelectric-like hysteresis loop originated from non-ferroelectric effects

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/1.4962387· OSTI ID:1329133
 [1];  [1];  [2];  [3];  [1]
  1. Sungkyunkwan Univ. (SKKU), Suwon, (South Korea)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Daegu Gyeongbuk Institute of Science and Technology, Daegu (South Korea)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
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. Furthermore, our work can provide a basic guideline for the correct interpretation of the hysteresis loop in PFM-based studies.
Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1329133
Journal Information:
Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 10 Vol. 109; ISSN APPLAB; ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (4)

Electrostatic-free piezoresponse force microscopy journal January 2017
Ferroelectricity and piezoelectricity in soft biological tissue: Porcine aortic walls revisited journal September 2017
Electrostatic contribution to hysteresis loop in piezoresponse force microscopy journal April 2019
Effect of surface charges on the polarization of BaTiO 3 thin films investigated by UHV ‐ SPM journal May 2018

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