Enhanced coercivity of as-prepared and chemically modified multiwalled carbon nanotubes

被引：7
|
作者：
Kuryliszyn-Kudelska, I. [1 ]
Malolepszy, A. [2 ]
Mazurkiewicz, M. [2 ]
Stobinski, L. [2 ,3 ]
Kurzydlowski, K. J. [3 ]
Dobrowolski, W. [1 ]
机构：
[1] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland
[2] Warsaw Univ Technol, Fac Mat Sci & Engn, PL-02507 Warsaw, Poland
[3] Polish Acad Sci, Inst Phys Chem, PL-01224 Warsaw, Poland
来源：
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE | 2011年 / 208卷 / 08期
关键词：
carbon nanotubes; coercivity; Fe nanoparticles; MWCNTs chemical modification; MAGNETIC-PROPERTIES;
D O I：
10.1002/pssa.201001179
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The systematic magnetic and structural properties of as-prepared, "Fe" catalyst based multiwalled carbon nanotubes (MWCNTs), and chemically modified MWCNTs were studied. The structural characterization by means of transmission electron microscopy, X-ray diffraction, and Raman spectroscopy was performed. DC magnetization up to 9 T was studied. We examined the influence of chemical treatment (purification procedure) on the magnetic properties of MWCNT's. The significant changes in the saturation magnetization after chemical treatment were observed. However, we noticed high magnetic coercivity values for as-prepared as well as chemically modified samples. (C) 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
引用
收藏
页码：1787 / 1790
页数：4
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