Title
Global excitation and local probing of ferroelectric domains
Author
Zhao, D.
Lenz, T.
Katsouras, I.
Blom, P.W.M.
de Leeuw, D.M.
Publication year
2017
Abstract
In this work, the macroscopic polarization of a ferroelectric capacitor is correlated with the local domain morphology. To this end, a ferroelectric capacitor of the random copolymer poly(vinylidenefluoride-trifluoroethylene) [P(VDF-TrFE)] is poled to a set polarization state in a Sawyer-Tower setup. After chemically removing the top electrode, the exposed ferroelectric is locally probed with piezoresponse force microscopy. The domains without the top electrode are thermodynamically stable for weeks in ambient environment, as proven by comparing the remanent polarization measured before etching away and after re-depositing the top electrode. Out-of-plane PFM phase images show a random distribution of domains with up and down polarity. We unambiguously demonstrate a linear correlation between the mean PFM phase and the macroscopic polarization. As a demonstration of the insights that the global excitation and local probing method can provide, we show how thermal and electrical depoling can result in identical macroscopic polarization yet completely different domain morphologies.
Subject
Nano Technology
HOL - Holst
TS - Technical Sciences
Electronics
Industrial Innovation
Domain switching
Ferroelectric domains
P(VDF-TrFE)
PFM
Piezoresponse force microscopy
Retention
Electrodes
Ferroelectric devices
Ferroelectric materials
Polarization
Scanning probe microscopy
Domain switchings
Ferroelectric domains
Piezoresponse force microscopy
PVDF-TrFE
Retention
Ferroelectricity
To reference this document use:
http://resolver.tudelft.nl/uuid:d96f536f-da8b-4478-be5f-ecbacbf29f90
DOI
https://doi.org/10.1016/j.orgel.2017.05.026
TNO identifier
762788
ISSN
1566-1199
Source
Organic Electronics: physics, materials, applications, 47, 189-193
Document type
article