Quantitative study of domain structure of BaTiO3 single crystal by UHV-sanning probe microscopy

S. Kaku, H. Eto, K. Nakamura, Yukio Watanabe

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

抄録

The nanoscopic properties of the clean, r free surface of a BaTiO 3 single crystal in an ultra-high c vacuum is examined. Atomic force microscopy, t piezoelectric force microscopy and Kelvin force microscopy measurements show that the potential difference between upward and downward 180° domain is approx 100 mV. This value is 100 times smaller than the value estimated by using the standard 180° domain theory. Furthermore, our experiments show that this result cannot be explained only by the conventional explanations (that is, a decrease in the depolarization field by closure domains, the compensation of polarization bound charge by contamination or by oxygen excess and deficiency, or ion transport). The results suggest a possibility that an intrinsic electrostatic shielding mechanism exists in the ferroelectrics and is essential for 180° domains.

本文言語英語
ホスト出版物のタイトル2009 18th IEEE International Symposium on the Applications of Ferroelectrics, ISAF 2009
DOI
出版ステータス出版済み - 12 1 2009
イベント2009 18th IEEE International Symposium on the Applications of Ferroelectrics, ISAF 2009 - Xian, 中国
継続期間: 8 23 20098 27 2009

その他

その他2009 18th IEEE International Symposium on the Applications of Ferroelectrics, ISAF 2009
国/地域中国
CityXian
Period8/23/098/27/09

All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • 電子工学および電気工学

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