Journal of Magnetics

The Korean Magnetics Society (한국자기학회)
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Pt Thickness Dependence of Oscillatory Interlayer Exchange Coupling in [CoFe/Pt/CoFe]/IrMn Multilayers with Perpendicular Anisotropy

  • Lee, Sang-Suk (Department of Computer and Electronic Physics, Sangji University) ;
  • Choi, Jong-Gu (Department of Functional Electron and Materials, Graduation, Sangji University) ;
  • Kim, Sun-Wook (Life Science Institute, Sangji University) ;
  • Hwang, Do-Guwn (Department of Computer and Electronic Physics, Sangji University) ;
  • Rhee, Jang-Roh (Department of Physics, Sookmyung Women's University)
  • Published : 2005.06.01
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Abstract

The oscillatory interlayer exchange coupling (IEC) has been shown in pinned $[CoFe/Pt(t_{pt})/CoFe]/IrMn$ multi-layers with perpendicular anisotropy. The period of oscillation corresponds to about 2 monolayers of Pt. The oscillatory behavior of IEC depending on the nonmagnetic metallic Pt thickness is thought to be related the antiferromagnetic ordering induced by IrMn layer. Oscillatory IEC as function of insulating NiO thickness has been observed in $[Pt/CoFe]_4/NiO(t_{NiO})/[CoFe/Pt]_4$ multilayers. The effect of N (number of bilayer repeats) upon the magnetic property of [Pt/CoFe]N/IrMn is also studied.

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References

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