Optical Study of Sol-gel Processed Nd-doped BiFeO3 Multiferroic Films by Spectroscopic Ellipsometry

被引：4
|
作者：
Yang Sheng-Hong [1 ]
Chen Sen [1 ]
Yan Ning [1 ]
Zhang Yue-Li [1 ]
机构：
[1] Sun Yat Sen Univ, Sch Phys & Engn, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China
来源：
FERROELECTRICS | 2013年 / 454卷 / 01期
基金：
中国国家自然科学基金;
关键词：
BNFO films; sol-gel method; spectroscopic ellipsometry; optical constants; THIN-FILMS; PHYSICS;
D O I：
10.1080/00150193.2013.842802
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We have prepared undoped and Nd-doped BiFeO3 films on Si(100) by sol-gel method. XRD measurements show that all the films are single perovskite structure and a phase transition appeared in Nd doping BiFeO3 films. Dense microstructure with evenly distributed grains about 100nm is observed by SEM. The ellipsometric measurements were carried out in the UV-visible region and the corresponding experimental data were fitted by using a model consisting of air/roughness/BNFO/Si(100). It has been found that the optical constants tend to increase with Nd content increasing, however, the optical band gap decreases as Nd content increasing.
引用
收藏
页码：78 / 83
页数：6
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