Journal of the Korean Magnetics Society (한국자기학회지)

The Korean Magnetics Society (한국자기학회)
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EFFECT OF THE ADDITION OF Ni ON GIANT MAGNETORESISTANCE OF Cu-Co AGED RIBBONS

  • Kim, I.J. (Department of Materials Science, Faculty of Engineering, Tohoku University) ;
  • Echigoya, J. (Department of Materials Science, Faculty of Engineering, Tohoku University) ;
  • Fukamichi, K. (Department of Materials Science, Faculty of Engineering, Tohoku University) ;
  • Shimada, Y. (Research Institute for Scientific Measurements, Tohoku University)
  • Published : 1995.10.01
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Abstract

Giant magnetoresistance(GMR) of $Cu_{85-x}Co_{15}Ni_{x}$ melt-spu ribbons is closely correlated with the microstructure produced by the spinodal decomposition. The solid solution range is extanded by the replacement of Cu by Ni in the as-quenched state. The wavelengths obtained by subsequent isothermal aging in Cu-Co-Ni ribbons are shorter than those in Cu-Co binary ribbons, resulting in the increase of the surface-to-volume ratio. The largest MR ratio of 8 % in high field has been achieved in the $Cu_{80}Co_{15}Ni_{5}$ aged ribbon. The field dependence of MR ratio in low fields becomes larger with the Ni content.

Keywords

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