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http://hdl.handle.net/10397/2503
| Title: | Formation of core/shell structured cobalt/carbon nanoparticles by pulsed laser ablation in toluene | Authors: | Kwong, HYA Wong, MH Leung, DCW Wong, YW Wong, KH |
Issue Date: | 1-Aug-2010 | 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. | Keywords: | Carbon Cobalt Crystal morphology Electron microscopy Magnetic particles Nanoparticles Pulsed laser deposition Raman spectra SQUID magnetometers Superparamagnetism |
Publisher: | American Institute of Physics | Journal: | Journal of applied physics | ISSN: | 0021-8979 | EISSN: | 1089-7550 | DOI: | 10.1063/1.3457216 | 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 http://link.aip.org/link/?jap/108/034304 |
| Appears in Collections: | Journal/Magazine Article |
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|---|---|---|---|---|
| JApplPhys_108_034304.pdf | 907.52 kB | Adobe PDF | View/Open |
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