Enhanced dielectric and magnetic properties in Ru and La co-doped BiFeO3 ceramics

LIU Weifang; GONG Yufei

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Enhanced dielectric and magnetic properties in Ru and La co-doped BiFeO3 ceramics

LIU Weifang 1 *,GONG Yufei 2

1.School of Science, Tianjin University, TianJin 300072

2.School of Science, Tianjin University, Tianjin 300072, People's Republic of China

*Correspondence author

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Funding: Specialized Research Fund for the Doctoral Program of Higher Education（No.20090032120067）, the National Natural Science Foundation （No.No. 11004148）, the Natural Science Foundation（No.No. 11JCYBJC02700）

Opened online:23 November 2012

Accepted by: none

Citation: LIU Weifang,GONG Yufei.Enhanced dielectric and magnetic properties in Ru and La co-doped BiFeO3 ceramics[OL]. [23 November 2012] http://en.paper.edu.cn/en_releasepaper/content/4494763

Multiferroic ceramics Bi0.9La0.1Fe1-xRuxO3 (x = 0%, 1% and 3%) were prepared using a solid-state reaction process. The structural transformation from rhombohedral to pseudocubic was confirmed in the Ru-doped samples via x-ray diffraction investigation, and the improved dielectric properties are ascribed to the morphotropic phase boundary and decreased oxygen defects existing in the Ru-substituted samples. The enhancement of magnetization is interpreted by the increased Fe3+ ions and the formation of a local 'ferrimagnetic' structure in the Ru-doped samples.

Keywords:multiferroic; dielectric; oxygen vacancy

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