en
Scientific article
Open access
English

Subcritical switching dynamics and humidity effects in nanoscale studies of domain growth in ferroelectric thin films

Published inNew journal of physics, vol. 17, no. 1, 013002
Publication date2015
Abstract

Ferroelectric domain switching in c-axis-oriented epitaxial Pb(Zr0.2Ti0.8)O3 thin films was studied using biased scanning probe microscopy tips. While linear and logarithmic dependence of domain size on tip bias and writing time, respectively, are well known, we report an additional linear dependence on relative humidity in the 28–65% range. We map out the switched domain size as a function of both the tip bias and the applied pulse time and describe a growth-limited regime for very short pulses and a nucleation-limited regime for very low tip bias. Using ‘interrupted-switching' measurements, we probe the nucleation regime with subcritical pulses and identify a surprisingly long relaxation time on the order of 100 ms, which we relate to ionic redistribution both on the surface and within the thin film itself.

Keywords
  • Ferroelectrics
  • Polarization switching dynamics
  • Piezoresponse force microscopy
  • Humidity
  • Nucleation
Research group
Citation (ISO format)
BLASER, Cédric, PARUCH, Patrycja. Subcritical switching dynamics and humidity effects in nanoscale studies of domain growth in ferroelectric thin films. In: New journal of physics, 2015, vol. 17, n° 1, p. 013002. doi: 10.1088/1367-2630/17/1/013002
Main files (1)
Article (Published version)
accessLevelPublic
Identifiers
ISSN of the journal1367-2630
601views
232downloads

Technical informations

Creation01/10/2015 5:14:00 PM
First validation01/10/2015 5:14:00 PM
Update time03/14/2023 10:38:50 PM
Status update03/14/2023 10:38:50 PM
Last indexation01/16/2024 3:45:17 PM
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack