Reduction of medium noise of Co-Pd multilayered perpendicular magnetic recording media by a thin carbon interlayer

Junichi Sayama*, Jun Kawaji, Toru Asahi, Jiro Hokkyo, Tetsuya Osaka

*この研究の対応する著者

研究成果査読

5 被引用数 (Scopus)

抄録

We report the effect of introducing a thin carbon interlayer to the recording layer on the read-write characteristics of Co-Pd multilayered perpendicular magnetic recording media. A 1-nm-thick carbon interlayer markedly reduced the medium noise and improved the output resolution, D50. As a result, the signal-to-noise ratio at the recording density of 200 kFRPI for the medium was higher by 5 dB than that for the medium without the interlayer. We attribute these improvements in read-write characteristics to a decrease in the crystal grain diameter of the recording layer, resulting in suppression of the transition fluctuation of recorded bits. The Co-Pd multilayered perpendicular magnetic recording medium with carbon interlayer has a high thermal stability despite a slight degradation of perpendicular magnetic anisotropy.

本文言語English
ページ(範囲)1059-1063
ページ数5
ジャーナルIEEE Transactions on Magnetics
39
2 II
DOI
出版ステータスPublished - 2003 3

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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