Observation of ring shaped domain patterns using a scanning nonlinear dielectric microscopy

Mirai Katoh, Takeshi Morita, Yasuo Cho

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


Unexpected ring shaped domain patterns were occasionally observed when ferroelectric nano-domain dots are formed by a voltage pulse application to the ferroelectric thin film using an electro conductive tip. In this study, we observed a real-time polarization reversal to understand such a variety of nano-domain formation processes. As a result, the ring shaped domain patterns were found to be related to the anti-parallel polarization reversal. Furthermore, by comparing the results of the congruent lithium tantalate to that of stoichiometric lithium tantalate, the mechanism of anti-parallel polarization reversal was suggested to link to the lattice vacancy of a specimen.

Original languageEnglish
Pages (from-to)207-219
Number of pages13
JournalIntegrated Ferroelectrics
Publication statusPublished - 2004 Dec 1


  • Anti-parallel polarization reversal
  • Real-time observation
  • Ring shaped domain
  • Scanning nonlinear dielectric microscopy

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Control and Systems Engineering
  • Ceramics and Composites
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry


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