Perpendicular recording: The promise and the problems

Roger Wood*, Yoshiaki Sonobe, Zhen Jin, Bruce Wilson

*この研究の対応する著者

研究成果: Conference article査読

54 被引用数 (Scopus)

抄録

Perpendicular recording has long been advocated as a means of achieving the highest areal densities. In particular, in the context of the 'superparamagnetic limit', perpendicular recording with a soft underlayer promises several key advantages. These advantages include a higher coercivity, thicker media that should permit smaller diameter grains and higher signal-to-noise ratio. Also, the sharper edge-writing will facilitate recording at very high track densities (lower bit aspect ratio). Recent demonstrations of the technology have shown densities comparable with the highest densities reported for longitudinal recording. This paper further examines the promise that perpendicular recording will deliver an increase in areal density two to eight times higher than that achievable with longitudinal recording. There are a number of outstanding issues but the key challenge is to create a low-noise medium with a coercivity that is high and is much larger than the remanent magnetization.

本文言語English
ページ(範囲)1-9
ページ数9
ジャーナルJournal of Magnetism and Magnetic Materials
235
1-3
DOI
出版ステータスPublished - 2001 10月
外部発表はい
イベントProceedings of the 5th Perpendicular Magnetic Recording Conference (PMRC 2000) - Sendai, Japan
継続期間: 2000 10月 232000 10月 26

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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