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Article
Uncompensated Polarization in Incommensurate Modulations of Perovskite Antiferroelectrics
arXiv
  • Tao Ma, Ames Laboratory
  • Zhongming Fan, Iowa State University
  • Bin Xu, University of Arkansas, Fayetteville and Soochow University
  • Tae-Hoon Kim, Ames Laboratory
  • Ping Lu, Sandia National Laboratories
  • Laurent Bellaiche, University of Arkansas, Fayetteville
  • Matthew J. Kramer, Iowa State University and Ames Laboratory
  • Xiaoli Tan, Iowa State University
  • Lin Zhou, Iowa State University and Ames Laboratory
Document Type
Article
Publication Version
Submitted Manuscript
Publication Date
1-1-2019
Abstract

Complex polar structures of incommensurate modulations (ICMs) are revealed in chemically modified PbZrO3 perovskite antiferroelectrics using advanced transmission electron microscopy techniques. The Pb-cation displacements, previously assumed to arrange in a fully-compensated antiparallel fashion, are found to be either antiparallel but with different magnitudes, or in a nearly orthogonal arrangement in adjacent stripes in the ICMs. Ab initio calculations corroborate the low-energy state of these arrangements. Our discovery corrects the atomic understanding of ICMs in PbZrO3-based perovskite antiferroelectrics.

Comments

This is a pre-print of the article Ma, Tao, Zhongming Fan, Bin Xu, Tae-Hoon Kim, Ping Lu, Laurent Bellaiche, Matthew J. Kramer, Xiaoli Tan, and Lin Zhou. "Uncompensated Polarization in Incommensurate Modulations of Perovskite Antiferroelectrics." arXiv preprint arXiv:1909.02536 (2019). Posted with permission.

Copyright Owner
The Authors
Language
en
File Format
application/pdf
Citation Information
Tao Ma, Zhongming Fan, Bin Xu, Tae-Hoon Kim, et al.. "Uncompensated Polarization in Incommensurate Modulations of Perovskite Antiferroelectrics" arXiv (2019)
Available at: http://works.bepress.com/xiaoli_tan/95/