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

Norimichi Chinone, Kohei Yamasue, Yoshiomi Hiranaga, Yasuo Cho

研究成果: Article査読

3 被引用数 (Scopus)

抄録

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.

本文言語English
論文番号09LE07
ジャーナルJapanese journal of applied physics
51
9 PART 2
DOI
出版ステータスPublished - 2012 9

ASJC Scopus subject areas

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

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