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Surface Potential Investigation on Nano Domain Formation in Lithium Tantalate Single Crystal

Published online by Cambridge University Press:  26 February 2011

Mirai Katoh  and
Yasuo Cho
Mirai Katoh
Affiliation:
milai@riec.tohoku.ac.jp, Research Institute of Electrcal Communication, Tohoku University, 2-1-1, Katahira, Aoba-ku, Sendai, N/A, N/A, Japan
Yasuo Cho
Affiliation:
cho@riec.tohoku.ac.jp, Research Institute of Electrical Communication, Tohoku University, Japan
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Abstract

The surface potential distribution following polarization reversal by scanning probe microscopy is examined in order to determine the mechanism of anti-parallel polarization reversal and ring-shaped domain formation in single-crystal lithium tantalate. Lithium vacancy lattice defects are identified as charge-trapping sites, with the resultant surface potential distribution governing the formation of ring-shaped nano-domains. The behavior of this charge injection is shown to be dependent on atmospheric humidity.

Keywords

ferroelectricitynanoscalescanning probe microscopy (SPM)
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 902: Symposium T – Ferroelectric Thin Films XIII , 2005 , 0902-T10-50
Copyright
Copyright © Materials Research Society 2006

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References

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