Synthesis And Characterization Of Carbon Magnetic Nanoparticles

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Synthesis And Characterization Of Carbon Magnetic Nanoparticles

Show simple item record Gusain, Sunilsingh en_US 2011-07-14T20:54:11Z 2011-07-14T20:54:11Z 2011-07-14 January 2011 en_US
dc.identifier.other DISS-11153 en_US
dc.description.abstract Carbon incorporated iron nanoparticles (Fe-CNPs) were successfully synthesized using ultrasonic cavitation in Benzene. This novel method of carbon nanoparticle (CNP) synthesis is a very cost-effective and versatile as one can easily tune the microstructure and magnetic properties by varying few parameters, for e.g. voltage. The Fe-CNP complexes are produced due to the electric plasma discharge generated between the electrodes in an ultrasonic cavitation field of liquid benzene. The constituent of the CNPs can be easily modified by different choice of electrode materials- iron and graphite. The resultant Fe-CNPs were characterized by high-resolution transmission electron microscopy and X-ray photoelectron spectroscopy to reveal the presence of different forms of carbon and iron carbide particles. TEM results of Fe-CNP and CNP show lattice fringe and a diffraction pattern suggesting crystalline form of carbon form. Raman spectroscopy of Fe-CNPs shows similarity to that of diamond powder thus suggesting that the crystallinity of the samples can be easily varied as well. The magnetic properties were investigated using superconducting quantum interference measurement devise (SQUID). The Fe-CNP show zero coercivity and increase in saturation magnetization with increase in synthesis voltage. On the other hand, the CNP produced using graphite electrodes are found to be magnetic in nature. Chemical analysis shows that the Fe-CNPs have iron constituent of ~3%. Biological applications of Fe-CNPs have been discussed en_US
dc.description.sponsorship Koymen, Ali en_US
dc.language.iso en en_US
dc.publisher Materials Science & Engineering en_US
dc.title Synthesis And Characterization Of Carbon Magnetic Nanoparticles en_US
dc.type M.S. en_US
dc.contributor.committeeChair Koymen, Ali en_US Materials Science & Engineering en_US Materials Science & Engineering en_US University of Texas at Arlington en_US masters en_US M.S. en_US

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