• DocumentCode
    1302577
  • Title

    SNR and density limit estimates: a comparison of longitudinal and perpendicular recording

  • Author

    Bertram, H.N. ; Williams, M.

  • Author_Institution
    Center for Magnetic Recording Res., California Univ., San Diego, La Jolla, CA, USA
  • Volume
    36
  • Issue
    1
  • fYear
    2000
  • Firstpage
    4
  • Lastpage
    9
  • Abstract
    Simplified Neel-Arrhenius analysis is utilized to determine limiting densities versus SNR for longitudinal and keepered-perpendicular media. Dominant transition noise is assumed and the effects of grain size distribution and storage above room temperature are included. Perpendicular recording potentially exhibits a higher density than longitudinal; for example, at SNR=20 dB, the limiting densities are approximately 500 and 100 Gbit/in2, respectively.
  • Keywords
    Neel temperature; grain size; magnetic recording noise; perpendicular magnetic recording; Neel-Arrhenius analysis; SNR; density limit; dominant transition noise; grain size distribution; keepered-perpendicular media; longitudinal recording; perpendicular recording; recording density; Acoustical engineering; Energy barrier; Grain size; Magnetic analysis; Magnetic recording; Magnetization; Noise shaping; Perpendicular magnetic recording; Signal to noise ratio; Temperature distribution;
  • fLanguage
    English
  • Journal_Title
    Magnetics, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9464
  • Type

    jour

  • DOI
    10.1109/20.824417
  • Filename
    824417
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1302577