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[1]黄思俞*,王宗篪,郑冬梅,等.FeV2O4多晶块材的磁电效应与输运特性[J].厦门大学学报(自然科学版),2017,56(03):378-383.[doi:10.6043/j.issn.0438-0479.201611022]
 HUANG Siyu*,WANG Zongchi,ZHENG Dongmei,et al.Magnetoelectric Effect and Transport Properties of FeV2O4 Polycrystal Bulk[J].Journal of Xiamen University(Natural Science),2017,56(03):378-383.[doi:10.6043/j.issn.0438-0479.201611022]
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FeV2O4多晶块材的磁电效应与输运特性(PDF/HTML)
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《厦门大学学报(自然科学版)》[ISSN:0438-0479/CN:35-1070/N]

卷:
56卷
期数:
2017年03期
页码:
378-383
栏目:
研究论文
出版日期:
2017-05-24

文章信息/Info

Title:
Magnetoelectric Effect and Transport Properties of FeV2O4 Polycrystal Bulk
文章编号:
0438-0479(2017)03-0378-06
作者:
黄思俞1*王宗篪1郑冬梅1王宇航2
1.三明学院机电工程学院,福建三明365004;2.清华大学物理系,北京100084
Author(s):
HUANG Siyu1*WANG Zongchi1ZHENG Dongmei1WANG Yuhang2
1.School of Mechanical and Electrical Engineering,Sanming University,Sanming 365004,China;2.Department of Physics,Tsinghua University,Beijing 100084,China
关键词:
FeV2O4多晶块材 尖晶石结构 磁电效应 交流阻抗谱
Keywords:
FeV2O4 polycrystal bulk spinel structure magnetoelectric effect AC impedance spectroscopy
分类号:
O 469
DOI:
10.6043/j.issn.0438-0479.201611022
文献标志码:
A
摘要:
采用固相烧结法制备了FeV2O4多晶块材,采用X射线衍射法和电子显微镜断面扫描对FeV2O4多晶块材进行结构表征,并测量其铁电极化强度和交、直流电输运特性.结果表明,制备的FeV2O4多晶块材是纯净的,结构较致密.低温(6 K)时FeV2O4多晶块材的铁电饱和极化强度达到141.8 μC/m2,外加磁场后自发极化强度受到较大的压制,表明样品具有较强的磁电效应,其最大磁阻效应(2.83%)出现在亚铁磁转变温度TN1(110 K)处.结合交流阻抗谱辅助等效回路分析法,对测量数据进行拟合.结果显示FeV2O4多晶块材的直流和交流输运特性都符合Mott的变程跳跃(variable range hopping,VRH)机制,其能带是近似于原子能级的窄带.
Abstract:
FeV2O4 polycrystal bulk was prepared using solid state sintering method.The microstructure of the sample was characte-rized with X-ray diffraction spectroscopy and scanning electron microscopy.The ferroelectric polarization and AC and DC transport properties were measured.The results show a pure phase and dense structure of the sample.A polarization of the sample as large as 141.8 μC/m2 was observed at low temperature(6 K).Moreover,the polarization was greatly suppressed by the magnetic field,indicating an obvious magnetoelectric effect.The magnetoresistance effect of the sample shows the maximum value of 2.83% at the ferromagnetic transition temperature TN1(110 K).By fitting the results with equivalent circuit method,it is found that both AC and DC tran-sport characteristics of the FeV2O4 sample are in accordance with the Mott variable range hopping(VRH)mechanism,suggesting the narrow band of the sample similar to that of the atomic level.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2016-11-06 录用日期:2016-12-26
基金项目:国家重点基础研究发展计划(973计划)(2012CB927402); 福建省自然科学基金(2015J01666 )
*通信作者:smchsy@163.com
引文格式:黄思俞,王宗篪,郑冬梅,等.FeV2O4多晶块材的磁电效应与输运特性[J].厦门大学学报(自然科学版),2017,56(3):378-383.
Citation:HUANG S Y,WANG Z C,ZHENG D M,et al.Magnetoelectric effect and transport properties of FeV2O4 polycrystal bulk[J].J Xiamen Univ Nat Sci,2017,56(3):378-383.(in Chinese)
更新日期/Last Update: 1900-01-01