期刊
SOLID STATE IONICS
卷 202, 期 1, 页码 1-5出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ssi.2011.03.017
关键词
Bismuth ferrite; Phase diagram; Defect structure; Ferroelectric properties; Magnetic properties
资金
- DFG [ES 119/7-1, ES 119/7-2]
The effects of Bi and Fe-excess on the structure, ferroelectric, leakage current and magnetic properties of BiFeO3 (BFO) thin films are reported. BFO with 5% excess exhibits no change in the structure with an improvement in leakage current properties in comparison to stoichiometric BFO. Raman spectroscopy of 10% Bi excess suggests a structural change from monoclinic to rhombohedral accompanied with an improvement of resistivity and ferroelectric polarization switching. A higher Fe-excess leads to the formation of pyrochlore Bi2Fe4O9 and gamma-Fe2O3 that cause an increase in conductivity at the macroscopic scale. The results are discussed in terms of Fe and Bi-excess effects on the defect structure of BFO. (C) 2011 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据