Cross-sectional observation of nanodomain dots formed in both congruent and stoichiometric LiTaO3 crystals

被引：17
作者：
Daimon, Yasuhiro [1 ]
Cho, Yasuo [1 ]
机构：
[1] Tohoku Univ, Res Inst Elect Commun, Aoba Ku, Sendai, Miyagi 9808577, Japan
来源：
APPLIED PHYSICS LETTERS | 2007年 / 90卷 / 19期
关键词：
D O I：
10.1063/1.2737906
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Cross-sectional shapes of polarization reversal nanodomain dots, formed in both congruent and stoichiometric LiTaO3 single-crystal recording media, were studied using scanning nonlinear dielectric microscopy. It was confirmed that the thickness of the domain wall of the nanodomain formed in stoichiometric LiTaO3 is much smaller than that in congruent LiTaO3. The variation in the domain wall thickness was evaluated as a function of sample thickness and depth position. It was confirmed that the domain wall thickness at the bottom of the sample was thinner than that at the top surface of the sample. (C) 2007 American Institute of Physics.
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