Exploring Vertex Interactions in Ferroelectric Flux-Closure Domains

Raymond McQuaid, Alexei Gruverman, James F. Scott, J. Marty Gregg

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)

Abstract

Using piezoresponse force microscopy, we have observed the progressive development of ferroelectric flux-closure domain structures and Landau−Kittel-type domain patterns, in 300 nm thick single-crystal BaTiO3 platelets. As the microstructural development proceeds, the rate of change of the domain configuration is seen to decrease exponentially. Nevertheless, domain wall velocities throughout are commensurate with creep processes in oxide ferroelectrics. Progressive screening of macroscopic destabilizing fields, primarily the surface-related depolarizing field, successfully describes the main features of the observed kinetics. Changes in the separation of domain-wall vertex junctions prompt a consideration that vertex−vertex interactions could be influencing the measured kinetics. However, the expected dynamic signatures associated with direct vertex−vertex interactions are not resolved. If present, our measurements confine the length scale for interaction between vertices to the order of a few hundred nanometers.
Original languageEnglish
Pages (from-to)4230-4237
JournalNano Letters
Volume14
Issue number8
Early online date24 Jul 2014
DOIs
Publication statusPublished - Aug 2014

Fingerprint Dive into the research topics of 'Exploring Vertex Interactions in Ferroelectric Flux-Closure Domains'. Together they form a unique fingerprint.

Cite this