Enhanced multiferroic characteristics in Fe-doped Bi4Ti3O12 ceramics
Enhanced multiferroic characteristics in Fe-doped Bi4Ti3O12 ceramics
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DOI：
10.1016/j.ssc.2010.04.002
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发表时间：
2010-07-01
影响因子：
2.1
通讯作者：
Chen, K.
中科院分区：
文献类型：
--
作者：
Chen, X. Q.;Yang, F. J.;Chen, K.
研究了用Fe部分取代Ti对传统固相反应法制备的Bi 4 Ti 3 O 12多铁性陶瓷的改性。Fe的引入没有改变Bi 4 Ti 3 O 12的层状钙钛矿结构。随着Fe含量的增加，样品的剩余极化增强。随着Fe掺杂量的增加，陶瓷的室温磁性由抗磁性向弱铁磁性发展。剩余极化和磁化强度的15%和6%的最大变化，实现在一个Bi 4 Ti 1Fe 2 O 12-δ样品极化后，它在磁场在1 T和直流电场在30 kV/cm的10分钟，是在室温下的电偶极子和磁偶极子之间的磁电耦合的证据。本研究结果提出了一个新的候选人的室温多铁性材料具有增强的性能。(C)2010爱思唯尔有限公司版权所有。
Modification of Bi4Ti3O12 multiferroic ceramics prepared by a conventional solid state reaction method were investigated by substituting Ti partly with Fe. The introduction of Fe does not change the layered perovskite structure of Bi4Ti3O12. Upon increasing Fe content, the remnant polarization of the samples is enhanced. The magnetism of the ceramics at room temperature develops from diamagnetism to weak ferromagnetism with increasing Fe doping. The largest variations of 15% and 6% in remnant polarization and magnetization, achieved in a Bi4Ti1Fe2O12-delta sample after poling it in a magnetic field at 1 T and a DC electric field at 30 kV/cm for 10 min, are evidence of magnetoelectric coupling between the electric dipoles and magnetic dipoles at room temperature. The present results suggest a new candidate for a room temperature multiferroic material with enhanced properties. (C) 2010 Elsevier Ltd. All rights reserved.