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Title: Designing pseudocubic perovskites with enhanced nanoscale polarization

Abstract

A crystal-chemical framework has been proposed for the design of pseudocubic perovskites with nanoscale ferroelectric order, and its applicability has been demonstrated using a series of representative solid solutions that combined ferroelectric (K0.5Bi0.5TiO3, BaTiO3, and PbTiO3) and antiferroelectric (Nd-substituted BiFeO3) end members. The pseudocubic structures obtained in these systems exhibited distortions that were coherent on a scale ranging from sub-nanometer to tens of nanometers, but, in all cases, the macroscopic distortion remained unresolvable even if using high-resolution X-ray powder diffraction. Different coherence lengths for the local atomic displacements account for the distinctly different dielectric, ferroelectric, and electromechanical properties exhibited by the samples. The guidelines identified provide a rationale for chemically tuning the coherence length to obtain the desired functional response.

Authors:
 [1];  [1];  [2];  [2]
  1. Materials Measurement Science Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
  2. Department of Materials Engineering, University of Sheffield, Sheffield S1 3JD, United Kingdom
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org.:
DOE - BASIC ENERGY SCIENCES
OSTI Identifier:
1410689
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 111; Journal Issue: 21
Country of Publication:
United States
Language:
ENGLISH
Subject:
36 MATERIALS SCIENCE

Citation Formats

Levin, I., Laws, W. J., Wang, D., and Reaney, I. M.. Designing pseudocubic perovskites with enhanced nanoscale polarization. United States: N. p., 2017. Web. doi:10.1063/1.5007700.
Levin, I., Laws, W. J., Wang, D., & Reaney, I. M.. Designing pseudocubic perovskites with enhanced nanoscale polarization. United States. doi:10.1063/1.5007700.
Levin, I., Laws, W. J., Wang, D., and Reaney, I. M.. Mon . "Designing pseudocubic perovskites with enhanced nanoscale polarization". United States. doi:10.1063/1.5007700.
@article{osti_1410689,
title = {Designing pseudocubic perovskites with enhanced nanoscale polarization},
author = {Levin, I. and Laws, W. J. and Wang, D. and Reaney, I. M.},
abstractNote = {A crystal-chemical framework has been proposed for the design of pseudocubic perovskites with nanoscale ferroelectric order, and its applicability has been demonstrated using a series of representative solid solutions that combined ferroelectric (K0.5Bi0.5TiO3, BaTiO3, and PbTiO3) and antiferroelectric (Nd-substituted BiFeO3) end members. The pseudocubic structures obtained in these systems exhibited distortions that were coherent on a scale ranging from sub-nanometer to tens of nanometers, but, in all cases, the macroscopic distortion remained unresolvable even if using high-resolution X-ray powder diffraction. Different coherence lengths for the local atomic displacements account for the distinctly different dielectric, ferroelectric, and electromechanical properties exhibited by the samples. The guidelines identified provide a rationale for chemically tuning the coherence length to obtain the desired functional response.},
doi = {10.1063/1.5007700},
journal = {Applied Physics Letters},
number = 21,
volume = 111,
place = {United States},
year = {Mon Nov 20 00:00:00 EST 2017},
month = {Mon Nov 20 00:00:00 EST 2017}
}