Magnetic and magnetoresistance behaviors of particulate iron/vinyl ester resin nanocomposites

被引：34
|
作者：
Guo, Zhanhu [1 ,2 ]
Hahn, H. Thomas [1 ,2 ]
Lin, Hongfei [3 ]
Karki, Amar B. [4 ]
Young, David P. [4 ]
机构：
[1] Univ Calif Los Angeles, Dept Mech & Aerosp Engn, Los Angeles, CA 90095 USA
[2] Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA
[3] Univ Calif Santa Barbara, Dept Chem Engn, Santa Barbara, CA 93106 USA
[4] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA
来源：
JOURNAL OF APPLIED PHYSICS | 2008年 / 104卷 / 01期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1063/1.2952047
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Magnetoresistance (MR) behavior of vinyl ester monomer stabilized iron nanoparticles and heat-treated vinyl ester resin nanocomposites reinforced with iron nanoparticles were investigated. Vinyl ester monomer serves as a coupling agent with one side covalently bound onto the nanoparticle surface by a displacement reaction and the other end copolymerized with extra vinyl ester resin to form a robust entity. The particle loading and type of material (polymer or carbonized polymer) have a significant effect on the magnetic and MR properties. The heat-treated nanocomposites follow a tunneling conduction. After reduction annealing, the obtained nanocomposites possess a room temperature MR of 8.3 % at a field of 90 kOe. (C) 2008 American Institute of Physics.
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页数：5
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