Fe3O4纳米颗粒/聚二甲基硅氧烷复合材料磁电容效应的研究

李圣昆; 唐军; 毛宏庆; 王明焕; 陈国彬; 翟超; 张晓明; 石云波; 刘俊

doi:10.7498/aps.63.057501

摘要

提出了一种以Fe3O4纳米颗粒和聚二甲基硅氧烷（PDMS）组成的复合材料为介质的平行板磁电容结构，并对其产生的磁电容效应的特点以及影响磁电容效应的因素进行了研究. 对不同粒径的Fe3O4纳米颗粒按不同比例与PDMS混合形成的复合材料进行了测试. 研究表明，与无磁场情况相比，在外磁场作用下，Fe3O4纳米颗粒/PDMS复合材料的电容值和介电损耗均发生了改变，产生了磁电容效应. 由该复合材料磁电容效应所产生的电容变化量随着纳米颗粒混合浓度的增大而增大，并且当纳米颗粒粒径尺寸大于常温超顺磁临界尺寸时，材料的电容变化量随着颗粒尺寸的减小而增大.

关键词:

Abstract

In this paper, a parallel plate structure for the magnetic capacitor applications is presented, which consists of hybrid materials of Fe3O4 nanoparticles with polydimethylsiloxane (PDMS) as the dielectric medium. By changing the nanoparticle sizes and concentrations in PDMS, the magnetic-capacitance effect of the designed structure is investigated, and some key factors which may affect the performances are studied. It can be concluded from the results that a clear magnetic-capacitance coupling effect is observed by putting the designed Fe3O4 nanoparticles and PDMS hybrid material in or out of a magnetic field. Meanwhile, as we increase the concentration of the nanoparticles, an increase of capacitance variation may be observed. If the nanoparticle sizes are bigger than the critical dimension of the super-paramagnetic effect, the capacitance variations is increased as the nanoparticle size increases.

Keywords:

Fe3O4 nanoparticles /
Polydimethylsiloxane composite material /
magnetic capacitance /
superparamagnetic

作者及机构信息

1.
中北大学, 仪器科学与动态测试教育部重点实验室, 电子测试技术国家重点实验室, 太原 030051

基金项目: 国家自然科学基金青年科学基金（批准号：51105345）、国家自然科学基金（批准号：91123016，61171056）、国家重点基础研究发展计划（批准号：2012CB723404）和教育部高等学校博士学科点青年教师基金（批准号：2011420120003）资助的课题.

Authors and contacts

1.
Key Laboratory of Instrumentation Science and Dynamic Measurement, Ministry of Education, State Key Laboratory of Science and Technology on Electronic Test and Measurement, North University of China, Taiyuan 030051, China

Funds: Project supported by the Young Scientists Fund of the National Natural Science Foundation of China (Grant No. 51105345), the National Natural Science Foundation of China (Grant Nos. 91123016, 61171056), the National Basic Research Program of China (Grant No. 2012CB723404), and the Young Teachers Fund for the Doctoral Program of Institution of Higher Education of Ministry of Education of China (Grant No. 2011420120003).

参考文献

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施引文献

[1]	Wang W, Luo X B, Zhang N, Ma Q Y 2011 Sensors Actuat. A 171 020248
[2]	Nan C W, Bichurin M I, Dong S X, Viehland D, Srinivasan G 2008 J. Appl. Phys. 103 031101
[3]	Jang H M, Park J H, Sangwoo R, Shannigrahi S R 2008 Appl. Phys. Lett. 93 252904
[4]	Wang W, Luo X B, Yang L J 2011 Acta Phys. Sin. 60 107702 (in Chinese)[王巍, 罗小彬, 杨丽洁 2011 物理学报 60 107702]
[5]	Huang Z J, Cao Y, Sun Y Y, Xue Y Y, Chu C W 1997 Phys. Rev. B 56 2623
[6]	Kimura T, Kawamoto S, Yamada I, Azuma M, Takano M 2003 Phys. Rev. B 67 180401
[7]	Goto T, Kimura T, Lawes G, Ramirez A P, Tokura Y 2004 Phys. Rev. Lett. 92 257201
[8]	Catalan G 2006 Appl. Phys. Lett. 88 102902
[9]	Parish M M, Littlewood P B 2008 Phys. Rev. Lett. 101 166602
[10]	Castel V, Brosseau C 2008 Appl. Phys. Lett. 92 233110
[11]	Banerjee S, Hajra P, Bhaumik A, Chakravorty D 2012 Mater. Lett. 79 65
[12]	Zang H D, Wang J G, Li M X, He L, Liu Z T, Zhang D Q, Hu B 2013 J. Phys. Chem. B 117 14136
[13]	Kim D K, Zhang Y, Voit W, Rao K V, Kehr J, Bjelke B M 2001 Scripta Mater. 44 081713
[14]	Diez P, Villalonga R, Villalonga M L, Pingarron J M 2012 J. Colloid Interf. Sci. 386 010181
[15]	Gupta A K, Wells S 2004 IEEE Trans. NanoBiosci. 3 010066
[16]	Muhammad Z Y, Yu J, Hou Y L, Gao S 2013 Chin. Phys. B 22 058702
[17]	Fleissner G, Stahl B, Falkenberg G 2007 J. Ornithol. 148 020643
[18]	Deshpande K S, Kuddannaya S, Staginus J, Thne P C, Louis C P M, Smet d, Joop H, Horst T, Luuk A M, Wielen V D 2012 Biochem. Eng. J. 67 111
[19]	Bianco M, Viola I, Cezza M, Pietracaprina F, Gigli G, Rinaldi R, Arima V 2012 Microfluid. Nanofluid. 13 399
[20]	Zhao J, Zhang G Y, Shi D X 2013 Chin. Phys. B 22 057701
[21]	He L X, Tjong S C 2013 Nanoscale Res. Lett. 8 132
[22]	Pan F, Ding B F, Fa T 2011 Acta Phys. Sin. 60 108501 (in Chinese) [潘峰, 丁斌峰, 法涛 2011 物理学报 60 108501]

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