Effects of forming gas annealing on LiNbO3 single crystals

被引：10

作者：

Chen, Feng ^{[3
,4
]}

Chen, Wan Ping ^{[1
,2
,3
,4
]}

Wang, Yu ^{[3
,4
]}

Hu, Yong Ming ^{[3
,4
]}

Shen, Zhen Jiang ^{[1
,2
]}

Chan, Helen Lai Wah ^{[3
,4
]}

机构：

[1] Wuhan Univ, Sch Phys & Technol, Wuhan 430072, Peoples R China

[2] Wuhan Univ, Minist Educ, Key Lab Artificial Micro & Nanostruct, Wuhan 430072, Peoples R China

[3] Hong Kong Polytech Univ, Dept Appl Phys, Hong Kong, Hong Kong, Peoples R China

[4] Hong Kong Polytech Univ, Mat Res Ctr, Hong Kong, Hong Kong, Peoples R China

来源：

PHYSICA B-CONDENSED MATTER | 2011年 / 406卷 / 03期

基金：

中国国家自然科学基金;

关键词：

LiNbO3; Hydrogen; Annealing; LITHIUM-NIOBATE; PHOTOELECTRON-SPECTROSCOPY; HYDROGEN; OXIDES;

D O I：

10.1016/j.physb.2010.11.085

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Z-cut congruent LiNbO3 single crystals were annealed in 95%N-2+5%H-2 at high temperatures. X-ray diffraction showed that 2 theta of (0 0 0 6) peak is obviously reduced by 0.6 degrees and 1.0 degrees for the samples annealed at 600 and 900 degrees C, respectively. A new peak appears at the high-energy side of O 1s spectrum in X-ray photoelelectron spectroscopy (XPS) analyses, and the leakage current is greatly increased. It is proposed that hydrogen is incorporated in LiNbO3 single crystals through forming gas annealing at temperatures up to 900 degrees C and exists in LiNbO3 as a proton bound to an oxygen ion through O-H bond with its electron donated. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：683 / 686

页数：4

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