Influence of transition elements doping on structural, optical and magnetic properties of BiFeO3 films fabricated by magnetron sputtering

被引：38

作者：

Yan, Hurui ^{[1
]}

Deng, Hongmei ^{[2
]}

Ding, Nuofan ^{[1
]}

He, Jun ^{[1
]}

Peng, Lin ^{[1
]}

Sun, Lin ^{[1
]}

Yang, Pingxiong ^{[1
]}

Chu, Junhao ^{[1
]}

机构：

[1] E China Normal Univ, Dept Elect, Key Lab Polar Mat & Devices, Minist Educ, Shanghai 200241, Peoples R China

[2] Shanghai Univ, Lab Microstruct, Shanghai 200444, Peoples R China

来源：

MATERIALS LETTERS | 2013年 / 111卷

基金：

中国国家自然科学基金;

关键词：

BiFeO3; Ferroelectrics; Thin films; Optical properties; Magnetic properties; THIN-FILMS;

D O I：

10.1016/j.matlet.2013.08.075

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Bi0.9La0.1Fe1-xCrxO3 (x=0.03, 0.05 and 0.07) thin films were deposited on LaNiO3/Si and quartz by RF magnetron sputtering, respectively. X-ray diffraction patterns indicate that all phases belong to BiFeO3, and no secondary phase is detected. Three A(1) modes and six E modes of the films are observed in Raman scattering spectra, and the A(1)-1 peak position shows red shift with the increasing of x, which indicates that the Cr doping induces more structural distortion. The band gap of the films for x=0.03, 0.05 and 0.07 can be expressed by (2.99-x) eV, which is due to the Cr doping that increases the tailing of conduction band edge into the band gap. With the Cr content increasing from 3% to 7%, the remnant magnetization and the magnetization at 10 kOe of the films show about 202% and 55% addition, respectively. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：123 / 125

页数：3