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

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish
Title of host publication2009 18th IEEE International Symposium on the Applications of Ferroelectrics, ISAF 2009
DOIs
Publication statusPublished - Dec 1 2009
Event2009 18th IEEE International Symposium on the Applications of Ferroelectrics, ISAF 2009 - Xian, China
Duration: Aug 23 2009Aug 27 2009

Other

Other2009 18th IEEE International Symposium on the Applications of Ferroelectrics, ISAF 2009
CountryChina
CityXian
Period8/23/098/27/09

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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    Kaku, S., Eto, H., Nakamura, K., & Watanabe, Y. (2009). Quantitative study of domain structure of BaTiO3 single crystal by UHV-sanning probe microscopy. In 2009 18th IEEE International Symposium on the Applications of Ferroelectrics, ISAF 2009 [5307523] https://doi.org/10.1109/ISAF.2009.5307523