Growth and optical properties of completely c-axis orientated LiNbO3 films deposited by pulsed laser deposition

被引：9
|
作者：
Wang, Xinchang [1 ]
Ye, Zhizhen
Zhao, Binghui
机构：
[1] Zhengzhou Univ, Sch Phys & Engn, Key Lab Mat Phys, Zhengzhou 450052, Peoples R China
[2] Zhejiang Univ, State Key Lab Silicon Mat, Hangzhou 310027, Peoples R China
来源：
SOLID STATE COMMUNICATIONS | 2007年 / 142卷 / 12期
基金：
中国国家自然科学基金;
关键词：
ferroelectric; thin films; orientation; optical properties;
D O I：
10.1016/j.ssc.2007.04.036
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Completely c-axis orientated LiNbO3 films have been deposited for waveguiding applications on SiO2/Si substrates by pulsed laser deposition without the application of external electric field or any other buffer layers. The stoichiometric LiNbO3 ceramic target was used. Drastic influences of the substrate temperature and oxygen pressure on the stoichiometry and c-axis orientation of LiNbO3 films are shown. Completely c-axis oriented and nearly stoichiometric LiNbO3 films can be grown at 600 degrees C in the oxygen pressure of 30 Pa. The films with column grain have smooth surface, uniform and small grain size, and the sharply defined interface. Favourable optical waveguiding properties of LiNbO3 films are demonstrated by the prism coupler technique. (C) 2007 Published by Elsevier Ltd.
引用
收藏
页码：694 / 697
页数：4
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