Synthesis and characterization of magnetic Fe/CNTs composites with controllable Fe nanoparticle concentration

被引：30
|
作者：
Zhao, Fan [1 ]
Duan, Hongyan [1 ]
Wang, Weigao [1 ]
Wang, Jun [1 ]
机构：
[1] Ningbo Univ, Dept Phys, Ningbo 315211, Zhejiang, Peoples R China
来源：
PHYSICA B-CONDENSED MATTER | 2012年 / 407卷 / 13期
基金：
中国国家自然科学基金;
关键词：
Multi-walled CNTs; Magnetic properties; Composites; Fe; MULTIWALLED CARBON NANOTUBES; NANOCRYSTALS;
D O I：
10.1016/j.physb.2012.03.052
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Fe/CNTs composites, with different concentrations of Fe nanoparticles (NPs) on carbon nanotube (CNT) surfaces, were successfully fabricated via a facile solvothermal method. The lengths of CNTs are up to 10 mu m and the mean diameter of the Fe nanoparticles is about 25 nm. The structures, composition and magnetic properties of the Fe/CNTs were characterized by XRD, FTIR, FE-SEM, TEM and PPMS. We found that the concentrations of Fe nanoparticles depositing on the CNTs could be controlled by adjusting the initial mass ratio of ferrocene to CNTs. The Fe/CNTs composites display good ferromagnetic properties at room temperature, with a saturation magnetization of 125 emu/g-Fe and a coercivity of 276 Oe. The Curie temperature of the sample is about 1038 K, slightly lower than that (1043 K) of the bulk iron. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：2495 / 2499
页数：5
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