Manipulating Ferroelectric Domains in Nanostructures Under Electron Beams

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • R. Ahluwalia
  • N. Ng
  • A. Schilling
  • R. G. P. McQuaid
  • D. M. Evans
  • J. M. Gregg
  • J. F. Scott

Detail(s)

Original languageEnglish
Article number165702
Journal / PublicationPhysical Review Letters
Volume111
Issue number16
Online published16 Oct 2013
Publication statusPublished - 18 Oct 2013
Externally publishedYes

Abstract

Freestanding BaTiO3 nanodots exhibit domain structures characterized by distinct quadrants of ferroelastic 90° domains in transmission electron microscopy (TEM) observations. These differ significantly from flux-closure domain patterns in the same systems imaged by piezoresponse force microscopy. Based upon a series of phase field simulations of BaTiO3 nanodots, we suggest that the TEM patterns result from a radial electric field arising from electron beam charging of the nanodot. For sufficiently large charging, this converts flux-closure domain patterns to quadrant patterns with radial net polarizations. Not only does this explain the puzzling patterns that have been observed in TEM studies of ferroelectric nanodots, but also suggests how to manipulate ferroelectric domain patterns via electron beams.

Citation Format(s)

Manipulating Ferroelectric Domains in Nanostructures Under Electron Beams. / Ahluwalia, R.; Ng, N.; Schilling, A. et al.
In: Physical Review Letters, Vol. 111, No. 16, 165702, 18.10.2013.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review