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Title: Random electric field instabilities of relaxor ferroelectrics

Abstract

Relaxor ferroelectrics are complex oxide materials which are rather unique to study the effects of compositional disorder on phase transitions. Here, we study the effects of quenched cubic random electric fields on the lattice instabilities that lead to a ferroelectric transition and show that, within a microscopic model and a statistical mechanical solution, even weak compositional disorder can prohibit the development of long-range order and that a random field state with anisotropic and power-law correlations of polarization emerges from the combined effect of their characteristic dipole forces and their inherent charge disorder. As a result, we compare and reproduce several key experimental observations in the well-studied relaxor PbMg 1/3Nb 2/3O 3–PbTiO 3.

Authors:
 [1];  [2]
  1. Univ. de Costa Rica, San Jose (Costa Rica)
  2. Univ. de Costa Rica, San Jose (Costa Rica); Argonne National Lab. (ANL), Argonne, IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22), Materials Sciences and Engineering Division
OSTI Identifier:
1364023
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
npj Quantum Materials
Additional Journal Information:
Journal Volume: 2; Journal Issue: 1; Journal ID: ISSN 2397-4648
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 36 MATERIALS SCIENCE; ferroelectrics and multiferroics; theory and computation

Citation Formats

Arce-Gamboa, Jose R., and Guzman-Verri, Gian G.. Random electric field instabilities of relaxor ferroelectrics. United States: N. p., 2017. Web. doi:10.1038/s41535-017-0032-9.
Arce-Gamboa, Jose R., & Guzman-Verri, Gian G.. Random electric field instabilities of relaxor ferroelectrics. United States. doi:10.1038/s41535-017-0032-9.
Arce-Gamboa, Jose R., and Guzman-Verri, Gian G.. Tue . "Random electric field instabilities of relaxor ferroelectrics". United States. doi:10.1038/s41535-017-0032-9. https://www.osti.gov/servlets/purl/1364023.
@article{osti_1364023,
title = {Random electric field instabilities of relaxor ferroelectrics},
author = {Arce-Gamboa, Jose R. and Guzman-Verri, Gian G.},
abstractNote = {Relaxor ferroelectrics are complex oxide materials which are rather unique to study the effects of compositional disorder on phase transitions. Here, we study the effects of quenched cubic random electric fields on the lattice instabilities that lead to a ferroelectric transition and show that, within a microscopic model and a statistical mechanical solution, even weak compositional disorder can prohibit the development of long-range order and that a random field state with anisotropic and power-law correlations of polarization emerges from the combined effect of their characteristic dipole forces and their inherent charge disorder. As a result, we compare and reproduce several key experimental observations in the well-studied relaxor PbMg1/3Nb2/3O3–PbTiO3.},
doi = {10.1038/s41535-017-0032-9},
journal = {npj Quantum Materials},
number = 1,
volume = 2,
place = {United States},
year = {Tue Jun 13 00:00:00 EDT 2017},
month = {Tue Jun 13 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
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