Observation of ferroelectric microdomains in LiNbO3 crystals by electrostatic force microscopy

被引：11

作者：

Tsunekawa, S ^{[1
]}

Ichikawa, J

Nagata, H

Fukuda, T

机构：

[1] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

[2] Sumitomo Osaka Cement, Optoelect Res Div, Funabashi, Chiba 2740053, Japan

来源：

APPLIED SURFACE SCIENCE | 1999年 / 137卷 / 1-4期

关键词：

lithium niobate; ferroelectric microdomain; mechanochemical polish; tapping-mode atomic force microscopy; electrostatic force microscopy;

D O I：

10.1016/S0169-4332(98)00367-5

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Mechanochemically polished surfaces of d.c. poled LiNbO3 crystals are observed by electrostatic force microscopy (EFM) which is performed by applying a d.c. voltage to the tip. EFM is confirmed to be suitable for a non-destructive inspection of submicron size 180 degrees domains (+ domains) in -z plane. It is revealed by EFM that the -z plane has a positive charge and the + domains are charged negative in the air. A possibility is proposed that the Li2O deficiency is an origin of the + domains. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：61 / 70

页数：10

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