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Title: Formation of core/shell structured cobalt/carbon nanoparticles by pulsed laser ablation in toluene
Authors: Kwong, Ho-yin Anthony
Wong, Man-hon
Leung, Dennis Chi-wah
Wong, Yuen-wah
Wong, Kin-hung
Subjects: Carbon
Crystal morphology
Electron microscopy
Magnetic particles
Pulsed laser deposition
Raman spectra
SQUID magnetometers
Issue Date: 1-Aug-2010
Publisher: American Institute of Physics
Source: Journal of applied physics, 1 Aug. 2010, v. 108, no. 3, 034304, p.1-5.
Abstract: Magnetic cobalt nanoparticles encapsulated in shells of layered structure have been produced by the technique of pulsed laser ablation in toluene. The morphology, microstructure, and magnetic properties of the prepared nanoparticles were characterized by electron microscopy, micro-Raman spectroscopy, and superconducting quantum interference device magnetometry, respectively. The results indicated that the cobalt nanoparticles fabricated are noncrystalline but coated with the graphitic carbon layers. It is believed that the formation of these carbon layers well-protect the cobalt nanoparticles to be oxidized thus maintaining the superparamagnetic property. This is an important feature that makes the cobalt nanoparticles a useful material for medical and many other magnetic based applications.
Rights: © 2010 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in H.Y. Kwong et al., J. Appl. Phys. 108, 034304 (2010) and may be found at
Type: Journal/Magazine Article
DOI: 10.1063/1.3457216
ISSN: 0021-8979 (print)
1089-7550 (online)
Appears in Collections:AP Journal/Magazine Articles

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