Nano-sized inverted domain formation in stoichiometric LiTaO3 single crystal using scanning nonlinear dielectric microscopy

Yoshiomi Hiranaga, Kenjiro Fujimoto, Yasuo Cho, Yasuo Wagatsuma, Atsushi Onoe, Kazuya Terabe, Kenji Kitamura

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


Scanning Nonlinear Dielectric Microscopy (SNDM) is the method for observing ferroelectric polarization distribution, and now, its resolution has become to the sub-nanometer order. Up to now, we have studied high-density ferroelectric data storage using this microscope. In this study, we selected stoichiometric LiTaO3 (SLT) single crystals as ferroelectric recording media. At first, we studied polarization inversion characteristics in detail, and as a result, we achieved forming small inverted domain with the radius of 6 nm. And we also studied the retention of inverted domain. Moreover, in a recent study, we have also formed inverted domain in congruent LiTaO3 (CLT) single crystal, and, as a result, we achieved high-density data storage in excess of 1 Tbit/inch2.

Original languageEnglish
Pages (from-to)203-209
Number of pages7
JournalIntegrated Ferroelectrics
Publication statusPublished - 2002 Dec 1


  • Engineered nano-sized ferroelectric domain
  • High-density ferroelectric data storage
  • Scanning nonlinear dielectric microscopy
  • Stoichiometric LiTaO

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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