Effects of Nd and high-valence Mn co-doping on the electrical and magnetic properties of multiferroic BiFeO3 ceramics

Hu ZQ; Li MY; Yu YLiu JPei LWang JLiu XLYu BFZhao XZ

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Effects of Nd and high-valence Mn co-doping on the electrical and magnetic properties of multiferroic BiFeO3 ceramics

机译：Effects of Nd and high-valence Mn co-doping on the electrical and magnetic properties of multiferroic BiFeO3 ceramics

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Pure BiFeO3 (BFO), 15 Nd doped BFO (BNF), and 15 Nd and 2 high-valence Mn co-doped BFO (BNFM) multiferroic ceramics were prepared by a rapid liquid phase sintering technique. A structural transition from rhombohedral R3c to orthorhombic P4mm occurred in the BNF and BNFM ceramics. The co-doped BNFM ceramics exhibit the largest dielectric constant, the smallest dielectric loss and leakage current, and an improved rectangular-shaped polarization hysteresis loop with a remnant polarization as high as 31 mu C/cm(2), which could be attributed to the lower concentration of charge defects and the structural transition. Besides, enhanced ferromagnetism is confirmed in BNFM with a remnant magnetization of 0.075 emu/g and a coercive magnetic field of 5.8 kOe, which might be attributed to the effective suppression of the spatially modulated spin structure by the Nd and Mn co-doping. (C) 2010 Elsevier Ltd. All rights reserved.

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来源
《Solid State Communications》 |2010年第24期|1088-1091|共4页
作者
Hu ZQ; Li MY; Yu YLiu JPei LWang JLiu XLYu BFZhao XZ;
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作者单位

Department of Electronic Science and Technology, School of Physical Science and Technology, Wuhan University, Wuhan 430072, PR China;

Department of Physics, Huazhong University of Science and Technology, Wuhan 430075, PR China;

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正文语种英语
中图分类固体物理学;
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A. Multiferroics; A. Ceramics; D. Electrical and magnetic properties;

Effects of Nd and high-valence Mn co-doping on the electrical and magnetic properties of multiferroic BiFeO3 ceramics

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