A simple analysis for magnetic behaviors of exchange-coupled granular/continuous perpendicular magnetic recording media

Osamu Kitakami, Takehito Shimatsu, Hiroaki Muraoka

Research output: Contribution to journalLetterpeer-review

1 Citation (Scopus)

Abstract

We present a simple analysis for magnetic behaviors of exchange-coupled granular/continuous (CGC) perpendicular magnetic recording media. The analysis shows how the CGC media behave against a vertical external field. The slope of the magnetization curves is governed by the thickness ratio (γ) of a continuous layer tc to a granular layer tg and the domain wall energy σw of the continuous layer. The size of a magnetization reversal unit which would dominate the recording resolution and thermal stability can be easily evaluated by the present analysis.

Original languageEnglish
Pages (from-to)L455-L457
JournalJapanese Journal of Applied Physics, Part 2: Letters
Volume41
Issue number4
DOIs
Publication statusPublished - 2002 Apr 15

Keywords

  • Coupled granular/continuous film
  • Magnetization reversal unit
  • Perpendicular magnetic recording
  • Shearing

ASJC Scopus subject areas

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

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