Journal of Magnetics

The Korean Magnetics Society (한국자기학회)
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Effect of Magnetic Property Modification on Current-Induced Magnetization Switching with Perpendicular Magnetic Layers and Polarization-Enhancement Layers

  • Kim, Woo-Jin (Department of Materials Science and Engineering, KAIST) ;
  • Lee, Kyung-Jin (Department of Materials Science and Engineering, Korea University) ;
  • Lee, Taek-Dong (Department of Materials Science and Engineering, KAIST)
  • Published : 2009.09.30
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Abstract

The effects of the magnetic property variation on current-induced magnetization switching in magnetic tunnel junction with perpendicular magnetic anistoropy (PMA) and the soft magnetic polarization-enhancement layers (PELs) inserted between the layers with PMA and the MgO layer was studied. A micromatnetic model was used to estimate the switching time of the free layer by different applied current densities, with changing saturation magnetization ($M_s$) of the PELs, interlayer exchange coupling between PMA layers and PELs. The switching time could be significantly reduced at low current densities, by increasing $M_s$ of PELs and decreasing interlayer exchange coupling.

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References

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