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Title: Theoretical study of ferroelectric nanoparticles using phase reconstructed electron microscopy

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.

Authors:
; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science - Office of Basic Energy Sciences - Materials Sciences and Engineering Division
OSTI Identifier:
1373098
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
Physical Review. B, Condensed Matter and Materials Physics
Additional Journal Information:
Journal Volume: 89; Journal Issue: 21; Journal ID: ISSN 1098-0121
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY

Citation Formats

Phatak, C., Petford-Long, A. K., Beleggia, M., and De Graef, M. Theoretical study of ferroelectric nanoparticles using phase reconstructed electron microscopy. United States: N. p., 2014. Web. doi:10.1103/PhysRevB.89.214112.
Phatak, C., Petford-Long, A. K., Beleggia, M., & De Graef, M. Theoretical study of ferroelectric nanoparticles using phase reconstructed electron microscopy. United States. doi:10.1103/PhysRevB.89.214112.
Phatak, C., Petford-Long, A. K., Beleggia, M., and De Graef, M. Sun . "Theoretical study of ferroelectric nanoparticles using phase reconstructed electron microscopy". United States. doi:10.1103/PhysRevB.89.214112.
@article{osti_1373098,
title = {Theoretical study of ferroelectric nanoparticles using phase reconstructed electron microscopy},
author = {Phatak, C. and Petford-Long, A. K. and Beleggia, M. and De Graef, M.},
abstractNote = {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.},
doi = {10.1103/PhysRevB.89.214112},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
issn = {1098-0121},
number = 21,
volume = 89,
place = {United States},
year = {2014},
month = {6}
}

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