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Microscopic investigation of the magnetic saturation process for Co/Pt multilayers

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Abstract

We have systematically investigated the magnetic saturation process for Co/Pt multilayers with perpendicular magnetic anisotropy by using the first-order reversal-curve (FORC) technique. We find that even for a field that apparently is higher than the major-loop saturation field, some microscopically not-yet-annihilated domains still remain. The true saturation on a microscopic scale field is found to be about 1.5 to 2.5 times greater than the macroscopicall-determined majorloop saturation field. Not-yet-annihilated domains are observed to be exponentially reduced with respect to the applied magnetic field.

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Authors and Affiliations

  1. Department of Physics, Chungbuk National University, Cheongju, 28644, Korea

    Duy-Truong Quach & Dong-Hyun Kim

  2. Department of Material Science and Engineering, Chungnam National University, Daejeon, 34134, Korea

    Kyung-Min Lee & Jong-Ryul Jeong

  3. Faculty of Engineering Physics and Nanotechnology, VNU University of Engineering and Technology, 144 Xuan Thuy, Cau Giay, Hanoi, 10000, Vietnam

    Duc-Thang Pham

Authors
  1. Duy-Truong Quach
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  2. Dong-Hyun Kim
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  3. Kyung-Min Lee
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  4. Jong-Ryul Jeong
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  5. Duc-Thang Pham
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Corresponding author

Correspondence to Dong-Hyun Kim.

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Quach, DT., Kim, DH., Lee, KM. et al. Microscopic investigation of the magnetic saturation process for Co/Pt multilayers. Journal of the Korean Physical Society 69, 72–74 (2016). https://doi.org/10.3938/jkps.69.72

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  • DOI: https://doi.org/10.3938/jkps.69.72

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