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

I. Kuryliszyn-Kudelska , A. Małolepszy , M. Mazurkiewicz , L. Stobinski , Krzysztof Kurzydłowski , W. Dobrowolski


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.
Author I. Kuryliszyn-Kudelska
I. Kuryliszyn-Kudelska,,
, A. Małolepszy
A. Małolepszy,,
, M. Mazurkiewicz
M. Mazurkiewicz,,
, L. Stobinski
L. Stobinski,,
, Krzysztof Kurzydłowski ZPM
Krzysztof Kurzydłowski,,
- Division of Materials Design
, W. Dobrowolski
W. Dobrowolski,,
Journal seriesphysica status solidi (a), ISSN 1862-6319
Issue year2011
Keywords in EnglishCarbon nanotubes, Coercivity, Fe nanoparticles, MWCNTs chemical modification
URL http://onlinelibrary.wiley.com/doi/10.1002/pssa.201001179/abstract
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