Ferroelectric domain breakdown

Michel Molotskii, Yossi Rosenwaks, Gil Rosenman

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

Abstract

A new phenomenon-ferroelectric domain breakdown, or the formation of string-like domains-is observed in various bulk ferroelectric crystals under a high inhomogeneous electric field generated at the tip of a high-voltage atomic force microscope. The domains have a high aspect ratio when their lengdl exceeds their lateral size by two or three orders of magnitude. This chapter reviews some of the recent advances in understanding the nature of this phenomenon. The main driving force for ferroelectric domain breakdown is not the tip's electric field, which is negligibly weak near the apex of the long domain, but rather internal forces generated owing to the minimization of depolarization field energy when the domain elongates. Domain breakdown is considered an extreme manifestation of Coulomb instability, which is caused by repulsion of bound charges near the inverted domain apex. This instability leads to strong pulling of the domain apex into a region where the tip-induced electric field is negligibly small.

Original languageEnglish
Title of host publicationAnnual Review of Materials Research
EditorsDavid Clarke, Manfred Ruehle, Venkatraman Gopalan
PublisherAnnual Reviews Inc.
Pages271-296
Number of pages26
ISBN (Print)0824317378, 9780824317379
DOIs
StatePublished - 2007

Publication series

NameAnnual Review of Materials Research
Volume37
ISSN (Print)1531-7331

Keywords

  • Field-induced superionic state
  • High-voltage atomic force microscope
  • String-like domains

Fingerprint

Dive into the research topics of 'Ferroelectric domain breakdown'. Together they form a unique fingerprint.

Cite this