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
收藏
页码：123 / 125
页数：3
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