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

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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.

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Authors and Affiliations

  1. Research Institute of Electrical Communication, Tohoku University, 2-1-1 Katahira, 980-8577, Aoba-ku, Sendai, Japan

    Mirai Katoh & Yasuo Cho

Authors
  1. Mirai Katoh
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  2. Yasuo Cho
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Katoh, M., Cho, Y. Surface Potential Investigation on Nano Domain Formation in Lithium Tantalate Single Crystal. MRS Online Proceedings Library 902, 1050 (2005). https://doi.org/10.1557/PROC-0902-T10-50

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  • DOI: https://doi.org/10.1557/PROC-0902-T10-50

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