CoCrPtTa and Co/Pd perpendicular magnetic recording media with amorphous underlayers

T. Onoue*, T. Asahi, K. Kuramochi, J. Kawaji, T. Homma, T. Osaka

*この研究の対応する著者

研究成果: Conference article査読

5 被引用数 (Scopus)

抄録

The effect of amorphous carbon underlayers on magnetic properties and read-write characteristics of Co73Cr18Pt8Ta3 single layer and Co/Pd multilayer perpendicular magnetic recording media were investigated. The increase in Hc and decrease in α, defined as 4π(dM/dH)H=Hc, were observed by increasing the underlayer thickness for both Co73Cr18Pt6Ta3 and Co/Pd media. The media with a low α value, suggesting a decrease in the exchange coupling, exhibited the higher coercivity and the improvement of S/N ratio. In read-write experiments, the improvement of S/N ratio for the Co/Pd media was achieved up to 400 kFRPI or even higher in the recording density by increasing carbon underlayer thickness, while that for the Co73Cr18Pt6Ta3 media was obtained up to ca. 250 kFRPI.

本文言語English
ページ(範囲)1592-1594
ページ数3
ジャーナルIEEE Transactions on Magnetics
37
4 I
DOI
出版ステータスPublished - 2001 7
イベント8th Joint Magnetism and Magnetic Materials -International Magnetic Conference- (MMM-Intermag) - San Antonio, TX, United States
継続期間: 2001 1 72001 1 11

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 電子工学および電気工学

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