Synthesis And Characterization Of Ferromagnetic Nanowires

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Synthesis And Characterization Of Ferromagnetic Nanowires

Show simple item record Tsai, PoChing en_US 2011-03-03T21:50:48Z 2011-03-03T21:50:48Z 2011-03-03 January 2010 en_US
dc.identifier.other DISS-10832 en_US
dc.description.abstract Ferromagnetic nanocrystals with shape anisotropy have drawn great attention in the past decades because of their unique magnetic properties and for their potential applications in ultra-high-density magnetic recording media, exchange-coupled nanocomposite magnets and related nanodevices. In this thesis, synthesis and characterixation of ferromagnetic CoNi and CoFe nanowires are reported. CoNi nanocrystals with different size, shape and composition were successfully synthesized via a catalyst chemical solution method. It was found out that the structure and morphology can be controlled by altering the NaOH concentration, and the elongation of the nanowires can be adjusted by changing surfactants ratio and catalyst amount. Unlike the CoNi, CoFe nanocrystals were prepared by a non-catalyst chemistry solution method. The particle size and shape are controlled by varying parameters such as solvent amount, surfactant ratio, reducing agent and heating rate. Morphological, structural, and compositional characterizations of the nanoparticles were performed by using Transmission Electron Microscopy (TEM), high resolution TEM (HRTEM), and X-Ray Diffractometer (XRD). Magnetic properties of nanoparticles of different size were studied by Alternating Gradiant Magnetometer (AGM). en_US
dc.description.sponsorship Liu, J. Ping en_US
dc.language.iso en en_US
dc.publisher Materials Science & Engineering en_US
dc.title Synthesis And Characterization Of Ferromagnetic Nanowires en_US
dc.type M.Engr. en_US
dc.contributor.committeeChair Liu, J. Ping en_US Materials Science & Engineering en_US Materials Science & Engineering en_US University of Texas at Arlington en_US masters en_US M.Engr. en_US

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