Journal of Magnetics

The Korean Magnetics Society (한국자기학회)
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Mumetal Growing Temperature Effect on the Exchange Coupling of Cu/mumetal/Al Oxide/Co/Cu Multilayers

  • Lee, Y.W. (Department of Materials Engineering, Chungnam National University) ;
  • Lee, T.H. (ReCAMM, Chungnam National University) ;
  • Kim, C.G. (ReCAMM, Chungnam National University) ;
  • Kim, C.O. (ReCAMM, Chungnam National University) ;
  • Yoon, T.S. (ReCAMM, Chungnam National University) ;
  • Lee, Y.H. (Department of Metallurgical Engineering, Chungnam National University)
  • Published : 2002.03.01
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Abstract

Magnetic multilayers of a ferromagnetic (FM)/insulator (I)/ferromagnetic (FM) structure have been studied to investigate magnetic exchange coupling between two FM layers. As the Mumetal $(Ni_{77}Fe_{14}Mo_{5}Cu_4$ wt%) growth temperature increases, the grain size and the surface roughness increase simultaneously. The smallest coupling field is obtained at $40^\circ{C}$ where the grain size is larger than that of the $20^\circ{C}$ sample. The exchange coupling field increases again at temperatures higher than $40^\circ{C}$ due to increase in the surface roughness of the Mumetal.

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References

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