Observation of nanoscale ferroelectric domains using super-higher-order nonlinear dielectric microscopy

Norimichi Chinone, Kohei Yamasue, Yoshiomi Hiranaga, Yasuo Cho

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Scanning nonlinear dielectric microscopy is a powerful technique for measuring the domain structure of ferroelectrics. We observed congruent LiTaO 3 and found the marked enhancement of nonlinear dielectric ''constants'' when the applied tip-sample voltage exceeded a particular threshold value. This is due to domain nucleation activated by a huge electric field under the tip. Moreover, low frequencies (less than a few hundred Hz) did not enhance the nonlinearity. An effectively lower electric field caused by ion conduction in the sample under the tip is a possible reason for the frequency-dependent characteristics of the enhanced nonlinearity for the applied voltage.

Original languageEnglish
Article number09LE07
JournalJapanese journal of applied physics
Volume51
Issue number9 PART 2
DOIs
Publication statusPublished - 2012 Sep 1

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Observation of nanoscale ferroelectric domains using super-higher-order nonlinear dielectric microscopy'. Together they form a unique fingerprint.

  • Cite this