Domain Reversal and Wall Structure of 180° Ferroelectric Domains in LiTaO3 Crystals

Venkatranian Gopalan, K. Kitarnura, Y. Furukawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

We report a dramatic influence of lithium nonstoichiometry in LiTaO3 crystals on the 180° coercive fields, internal fields, domain wall strain, optical birefringence, and domain shape. Congruent composition of LITaO3 ( [Li]/([LI]+[Ta])~0.485) show large coercive fields of ~21kV/mm for domain motion and built-in internal fields of ~4.5kV/mn, domain wall strains of |ϵn| ~(1-10)x10-6, optical birefringence in the z-plane, and triangular domains with domain walls parallel to the crystallographic x-axes. On the other hand, near-stolchiometrlc crystals of LiTaO3 ([Li]/([Li]+[Ta])~0.499) studied here show low coercive fields of ~1.7kV/mm, internal fields of <0.1kV/mm, negligible domain wall sixain or optical birefringence, and six-sided domains with domain walls parallel to crystallographic y-axes.

Original languageEnglish (US)
Title of host publicationFundamental Physics of Ferroelectrics 2000
Subtitle of host publicationAspen Center for Physics Winter Workshop
EditorsRonald E. Cohen, Richard A. Mewaldt
PublisherAmerican Institute of Physics Inc.
Pages183-190
Number of pages8
ISBN (Electronic)1563969599
DOIs
StatePublished - Sep 12 2000
EventAspen Center for Physics Winter Workshop on Fundamental Physics of Ferroelectrics 2000 - Aspen, United States
Duration: Feb 13 2000Feb 20 2000

Publication series

NameAIP Conference Proceedings
Volume535
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

ConferenceAspen Center for Physics Winter Workshop on Fundamental Physics of Ferroelectrics 2000
CountryUnited States
CityAspen
Period2/13/002/20/00

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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