Physics of perpendicular recording: Effects of magnetic "charges"

Sakhrat Khizroev, Andreas Lyberatos, Mark H. Kryder, Dmitri Litvinov

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Using a 3D expression for the stray field emanating from a perpendicular medium with information recorded at different areal densities, the effects of the magnetic "charge" distribution were explored. The existence of a peak in a density roll-off curve is one of the typically observed effects in perpendicular recording. Comparison between longitudinal and perpendicular recording technologies was made, and guidelines helping appropriately choose the bit aspect ratio (BAR), the recording layer thicknesses, and other parameters, were derived.

Original languageEnglish (US)
Pages (from-to)L758-L760
JournalJapanese Journal of Applied Physics, Part 2: Letters
Issue number7 A
StatePublished - Jul 1 2002
Externally publishedYes


  • Next generation magnetic recording systems
  • Perpendicular recording dynamics

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)


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