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Enhanced coercivity of as‐prepared and chemically modified multiwalled carbon nanotubes
Author(s) -
KuryliszynKudelska I.,
Małolepszy A.,
Mazurkiewicz M.,
Stobinski L.,
Kurzydłowski K. J.,
Dobrowolski W.
Publication year - 2011
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201001179
Subject(s) - coercivity , materials science , raman spectroscopy , transmission electron microscopy , magnetization , chemical engineering , carbon nanotube , analytical chemistry (journal) , nanotechnology , chemistry , organic chemistry , magnetic field , physics , engineering , condensed matter physics , quantum mechanics , optics
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.