Small inverted domain formation in stoichiometric LiTaO₃ single crystal using scanning nonlinear dielectric microscopy

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

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

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

Kenji Kitamura Research Institute of Electrical Communication, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980–8577, Japan; National Institute for Research in Inorganic Materials, 1–1 Namiki, Tsukuba, 305–0044, Japan

Abstract

Using scanning nonlinear dielectric microscopy, we formed the small inverted domain dots in stoichiometric LiTaO₃ single crystal for a basic investigation of domain dynamics in very small area. The relationship between the voltage for domain reversal and an inverted area was experimentally obtained, and the relationship between an inverted domain area and a voltage duration was measured. As a result, nano sized inverted domain dots in stoichiometric LiTaO₃ single crystal was successfully obtained.

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Small inverted domain formation in stoichiometric LiTaO₃ single crystal using scanning nonlinear dielectric microscopy

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Small inverted domain formation in stoichiometric LiTaO₃ single crystal using scanning nonlinear dielectric microscopy