Self-assembly and switching in ferroelectrics and multiferroics

J. F. Scott*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Molecules of low symmetry often self-assemble in Nature to produce mesoscopic structures of symmetry higher than their constituent building blocks, including "super-cubic" structures. Such self-assembled hexagonal domains have recently been observed in orthorhombic polymeric ferroelectrics, and resemble those known in surfactants and in magnetic bubble domains. Ferroelastic nanodomains in ferroelectric films also self-assemble into bundles of tens of nanometers diameter within each ferroelectric domain that locally average polarization <P > and strain <s > to small values. Under applied stress or electric or magnetic field these bundles exhibit higher mobility than expected and switch polarization via magnetostriction plus piezoelectricity. The phenomenon is analogous to Anderson's 1962 model of "vortex bundle" motion in Type-II superconductors. Copyright (C) EPLA, 2013

Original languageEnglish
Article number37001
Number of pages5
JournalEPL
Volume103
Issue number3
DOIs
Publication statusPublished - Aug 2013

Keywords

  • HARD SUPERCONDUCTORS
  • CYLINDRICAL DOMAINS
  • POLARIZATION
  • NANODOTS
  • CLOSURE

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