Fabrication of FeCo Nanoparticles by Sonochemical Route

ORAL

Abstract

FeCo nanoparticles with high saturation magnetization are greatly needed for biomedical applications and for the fabrication of exchange-coupled nanocomposite magnets. The aim of this study is to synthesize crystalline FeCo nanoparticles with a magnetic saturation over 200 emu/g. The preparation of FeCo nanoparticles was done through ultra sonochemical decomposition of iron (II) chloride and cobalt (II) chloride in di-ethylene glycol with hydrazine hydrate as a reducing agent. Our research led to FeCo nanoparticles with a maximum saturation magnetization of 215 emu/g, and with a particle size in the range of 40 to 200 nm. The size of the particles was controlled by varying the concentration of the chlorides in relation to the solvent. Current efforts are focused to making smaller particles with a size below 40 nm.

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Authors

  • Frank Abel

    Department of Physics and Astronomy, University of Delaware, Newark, DE 19716, USA, Department of Physics and Astronomy, University of Delaware, 217 Sharp Lab, Newark, DE 19716, United States

  • George Hadjipanayis

    Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, USA, University of Delaware, Department of Physics and Astronomy, University of Delaware, Newark, DE 19716, USA, Department of Physics and Astronomy, University of Delaware, 217 Sharp Lab, Newark, DE 19716, United States

  • Elvira Bauer

    Istituto di Struttura della Materia, C.N.R., Montelibretti (Rome), Italy