Physics of perpendicular recording: Effects of magnetic charge distribution

D. Litvinov, A. Lyberatos, M. H. Kryder, S. Khizroev

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The nature of the stray and demagnetizing field in perpendicular media is drastically different from what is observed in conventional longitudinal recording. In contrast to longitudinal recording, in perpendicular recording the magnetic "charges," which are the effective sources of the demagnetization and stray fields, are concentrated not at the transitions but at the top and effective bottom surfaces of the recording layer (RL). Based on analytical calculations and 3D-boundary element modeling a detailed analysis of the stray and demagnetization fields for perpendicular RL as functions of the areal bit density, the bit-aspect-ratio (BAR), linear and track densities, and the RL thickness is presented. The observed dependencies are contrasted to dependencies observed in longitudinal recording.

Original languageEnglish (US)
Title of host publicationINTERMAG Europe 2002 - IEEE International Magnetics Conference
EditorsJ. Fidler, B. Hillebrands, C. Ross, D. Weller, L. Folks, E. Hill, M. Vazquez Villalabeitia, J. A. Bain, Jo De Boeck, R. Wood
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)0780373650, 9780780373655
DOIs
StatePublished - 2002
Externally publishedYes
Event2002 IEEE International Magnetics Conference, INTERMAG Europe 2002 - Amsterdam, Netherlands
Duration: Apr 28 2002May 2 2002

Publication series

NameINTERMAG Europe 2002 - IEEE International Magnetics Conference

Conference

Conference2002 IEEE International Magnetics Conference, INTERMAG Europe 2002
Country/TerritoryNetherlands
CityAmsterdam
Period4/28/025/2/02

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering
  • Surfaces, Coatings and Films

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