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

页码：78 / 83

页数：6

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