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


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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Correspondence to Mirai Katoh.

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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).

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