• DocumentCode
    3531449
  • Title

    Activation volumes in CoPtCr-SiO2 perpendicular recording media

  • Author

    Inaba, Y. ; Shimatsu, T. ; Muraoka, Hiroaki ; Dutson, I.D. ; O´Grady, K.

  • Author_Institution
    Tohoku Univ., Sendai, Japan
  • fYear
    2005
  • fDate
    4-8 April 2005
  • Firstpage
    599
  • Lastpage
    600
  • Abstract
    The activation volume (Vact) is the minimum unit of magnetization reversal and the value of the associated diameter (Dact) indicates the potential recording density of media. In this study, we measured Dact for CoPtCr-SiO2 media by two methods: the Sharrock´s equation, and the second is based on the measurement of the fluctuation field from time dependence data determined using a magneto-optical Kerr effect (MOKE). We discuss the values of Dact obtained from the two measurements for CoPtCr-SiO2 media with and without soft under layers (SUL).
  • Keywords
    Kerr magneto-optical effect; chromium alloys; cobalt alloys; magnetic thin films; magnetisation reversal; perpendicular magnetic recording; platinum alloys; silicon compounds; CoPtCr-SiO2; Sharrock equation; activation volumes; associated diameter; fluctuation field; magnetization reversal; magneto-optical Kerr effect; perpendicular recording media; soft under layers; Equations; Fluctuations; Grain size; Magnetic field measurement; Magnetization; Nonhomogeneous media; Perpendicular magnetic recording; Pulse measurements; Remanence; Time measurement;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International
  • Print_ISBN
    0-7803-9009-1
  • Type

    conf

  • DOI
    10.1109/INTMAG.2005.1463728
  • Filename
    1463728
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=3531449