Polarization Closure in PbZr(0.42)Ti(0.58)O3 Nanodots

L.J. McGilly, Marty Gregg

Research output: Contribution to journalArticle

44 Citations (Scopus)
8 Downloads (Pure)

Abstract

Domain states in PbZr(0.42)Ti(0.58)O3 single-crystal ferroelectric nanodots, formed on cooling through the Curie temperature, were imaged by transmission electron microscopy. In the majority of cases, 90o stripe domains were found to form into four distinct “bundles” or quadrants. Detailed analysis of the dipole orientations in the system was undertaken, using both dark-field imaging and an assumption that charged domain walls were energetically unfavorable in comparison to uncharged walls. On this basis, we conclude that the dipoles in these nanodots are arranged such that the resultant polarizations, associated with the four quadrant domain bundles, form into a closed loop. This “polarization closure” pattern is reminiscent of the flux-closure already commonly observed in soft ferromagnetic microdots but to date unseen in analogous ferroelectric dots.
Original languageEnglish
Pages (from-to)4490-4495
Number of pages6
JournalNano Letters
Volume11
Issue number10
DOIs
Publication statusPublished - 12 Oct 2011

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanical Engineering

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