Journal of the Ceramic Society of Japan
Online ISSN : 1882-1022
Print ISSN : 0914-5400
ISSN-L : 0914-5400
Observation of the Domain Motion in Ferroelectric Single Crystals with a Diffuse Phase Transition
Koichiro KATOKayoko SUZUKIKenji UCHINO
Author information
JOURNALS FREE ACCESS

1990 Volume 98 Issue 1140 Pages 840-845

Details
Abstract

Optical or electron microscopes have been usualy used to observe ferroelectric domains. But they have some difficulties in applying an external electric field or in changing the temperature of a sample. A CCD microscope has been developed for the domain observation by combining a low magnification object-lens and a high resolution CCD sensor. The CCD microscope revealed more than ×1000 magnification on a CRT display with a very bright view. Moreover, it is easy to apply an electric field on the sample because of a sufficient distance between the object-lens and the sample. The image of the domain motion is instantaneously recorded with a VTR. Single crystals of the (1-x)Pb(Zn1/3Nb2/3)O3-xPbTiO3 system prepared by the flux method were used. This solid solution system exhibits a morphotropic phase boundary between rhombohedral and tetragonal phase near x=0.1. The phase transition behavior from ferroelectric to paraelectric phase becomes sharp with increasing PbTiO3 concentration (x) in comparison with a diffused phase transition in Pb(Zn1/3Nb2/3)O3. Our observation demonstrated that the ferroelectric domain motion is closely correlated with the phase transition diffuseness and dielectric relaxation.

Information related to the author
© The Ceramic Society of Japan
Previous article Next article
feedback
Top