Journal of Magnetics

The Korean Magnetics Society (한국자기학회)
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Variation of the Switching Field of Composite Nanowires with Different Widths

  • Kim, Seung-Ho (Institute of Physics and Applied Physics, Yonsei University) ;
  • Lee, Han-Seok (Institute of Physics and Applied Physics, Yonsei University) ;
  • Lee, Seung-Hyun (Nanomedical National Core Research Center, Yonsei University) ;
  • Lee, Woo-Young (Materials Science and Engineering, Yonsei University) ;
  • Lee, J. (Institute of Physics and Applied Physics, Yonsei University)
  • Published : 2008.12.31
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Abstract

The switching field of a 300 nm wide nanowire has been controlled by attaching a wide wire to it. The width of the wide wires varies from 700 nm to 2000 nm. While the connection of the two wires does not affect the switching field of the wide wires, it strongly affects the 300 nm-wire, resulting in a decrease of the switching field of the isolated wire from 175 Oe to 54 Oe when the 2000 nm-wire is connected to it. This result clearly shows that the switching field of the nanowire can be engineered by attaching a nucleation pad that has a different magnetic anisotropy.

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