Modes of Domain Wall Motion and Polarization of Lead Zirconate Titanate Polycrystals

Domain wall motion depending on polarization field has been studied for tetragonal lead zirconate titanate (PZT) polycrystals. The domain structure of PZT polycrystals was observed in a backscattered electron image obtained with a scanning electron microscope under various poling conditions. Domain...

Full description

Saved in:
Bibliographic Details
Published in:Japanese Journal of Applied Physics 2011-09, Vol.50 (9), p.09NC03-09NC03-5
Main Authors: Omori, Minoru, Mishima, Tsuneo, Fujimoto, Tetsuro
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Domain wall motion depending on polarization field has been studied for tetragonal lead zirconate titanate (PZT) polycrystals. The domain structure of PZT polycrystals was observed in a backscattered electron image obtained with a scanning electron microscope under various poling conditions. Domain wall reorientation was observed when the applied polarization field strength became higher than the coercive electric field. An in situ X-ray diffraction (XRD) measurement was also done to evaluate the domain wall motion contribution, under a polarization field. The XRD intensity ratio of (002) vs (200) reached as much as 0.72, which was explained by taking the both contributions of domain wall reorientation and translation. The experimental data and consideration by a geometrical domain wall motion model confirmed that the domain wall translation has zero threshold energy and the domain wall reorientation occurs beyond the coercive electric strength, corresponding to a finite threshold energy.
ISSN:0021-4922
1347-4065
DOI:10.1143/JJAP.50.09NC03