Theoretical study of ferroelectric nanoparticles using phase reconstructed electron microscopy

C. Phatak, A. K. Petford-Long, M. Beleggia, M. De Graef

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Ferroelectric nanostructures are important for a variety of applications in electronic and electro-optical devices, including nonvolatile memories and thin-film capacitors. These applications involve stability and switching of polarization using external stimuli, such as electric fields. We present a theoretical model describing how the shape of a nanoparticle affects its polarization in the absence of screening charges, and quantify the electron-optical phase shift for detecting ferroelectric signals with phase-sensitive techniques in a transmission electron microscope. We provide an example phase shift computation for a uniformly polarized prolate ellipsoid with varying aspect ratio in the absence of screening charges.

Original languageEnglish (US)
Article number214112
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume89
Issue number21
DOIs
StatePublished - Jun 24 2014

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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