1:45 PM - 2:00 PM
△ [19p-F104-2] Effect of Magnetic Field Strength on Morphology of Ferromagnetic Metal Nanowire
Keywords:nanowire, nickel, magnetic field
The ferromagnetic metal nanowire is synthesized via an electroless deposition with an external magnetic field. In this method, the nanoparticles are nucleated at first in the solution and then align along the magnetic field. The metal is deposited consecutively to fill the pocket of connected nanoparticles and finally smooth nanowires are synthesized. In this work, the diameter and the shape of nanowires synthesized under various magnetic field conditions were microscopically characterized, and we found the morphology of nanowire was strongly affected by the external magnetic field strength. The nanoparticles nucleated in the solution are attracted toward the magnet to form an alignment, but on the other hand they are agitated by solvent convection, Brownian motion and the gas bubbles, disturbing the alignment. These competing functions determine the morphology of synthesized nanowire. Consequently, this suggests that only the magnetic field condition can control the morphology of nanowire.