Ferroelastic and 90° ferroelectric domains in Bi 2 WO 6 single crystals

Xianghan Xu, Fei Ting Huang, Sang Wook Cheong

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

High-quality single crystals of Bi2WO6 are grown using a flux method. With different flux growth recipes, we aim to control the crystallization temperature to be lower and higher than the ferroelectric transition temperature, resulting in mono-domain and multi-domain Bi2WO6 crystals, respectively. Abundant ferroelastic orthorhombic twin domains are observed in the multi-domain crystals under an optical microscope. PFM studies unveil the 90° polarization change across those ferroelastic domain walls, as well as the absence of 180° ferroelectric domains in the as-grown multi-domain crystals, indicating a high energy cost of 180° ferroelectric domains. Moreover, a 45° tilt of the 90° ferroelectric domain walls is discovered, and this tilt creates a new type of charged 90° ferroelectric walls, which have not been observed in other bulk ferroelectrics.

Original languageEnglish (US)
Article number2243002
JournalJournal of Advanced Dielectrics
Volume13
Issue number3
DOIs
StatePublished - Jun 1 2023
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2023 The Author(s).

Keywords

  • Aurivillius phase
  • ferroelectric
  • Flux growth
  • PFM
  • twin domains

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