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Title: Mechanical Removal and Rescreening of Local Screening Charges at Ferroelectric Surfaces

Journal Article · · Physical Review Applied
 [1];  [2];  [2];  [1];  [2];  [1]
  1. Argonne National Lab. (ANL), Argonne, IL (United States). Nanoscience and Technology Division
  2. Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division

In this paper, we report the kinetics of screening charge removal and rescreening on periodically poled lithium niobate using charge-gradient microscopy and electrostatic force microscopy (EFM). A minimum pressure needs to be applied to initiate mechanical screening charge removal, and increasing the pressure leads to further removal of charge until a threshold is reached when all screening charges are removed. We fit all rescreening EFM contrast curves under various pressures into a universal exponential decay. Finally, the findings imply that we can control the screening degree of ferroelectric surfaces by mechanical means without affecting the polarization underneath.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1357474
Alternate ID(s):
OSTI ID: 1180365
Journal Information:
Physical Review Applied, Vol. 3, Issue 1; ISSN 2331-7019
Publisher:
American Physical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 19 works
Citation information provided by
Web of Science

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Cited By (8)

Electret formation in transition metal oxides by electrochemical amorphization journal January 2020
Piezo-generated charge mapping revealed through direct piezoelectric force microscopy journal October 2017
The flexoelectric effect in Al-doped hafnium oxide journal January 2018
Surface-screening mechanisms in ferroelectric thin films and their effect on polarization dynamics and domain structures journal January 2018
Ferroelectric switching by the grounded scanning probe microscopy tip journal June 2015
Effect of surface charges on the polarization of BaTiO 3 thin films investigated by UHVSPM journal May 2018
Piezoelectric Materials for Medical Applications book August 2018
Piezo-generated charge mapping revealed through Direct Piezoelectric Force Microscopy text January 2016