Influence of magnetic cluster-size distribution on signal-to-noise ratio in perpendicular magnetic recording media

M. Hashimoto, K. Miura, H. Muraoka, H. Aoi, Y. Nakamura

研究成果: Article査読

8 被引用数 (Scopus)

抄録

Perpendicular recording media noise is investigated with a microstructure model based upon magnetic clustering for irregular magnetization transitions. This model uses cylinders to account for the distribution of cluster diameters. Quantitative comparisons between experiments and calculations indicate that the cluster-size distribution of media can be estimated from the read/write properties. Estimates show that the cluster-size deviation of perpendicular recording media is somewhat larger than that of longitudinal recording media. Because calculations show that transition jitter depends strongly on the cluster-size distribution, reduction of the cluster-size deviation, as well as reducing the average cluster size, can significantly improve the signal-to-noise ratio of perpendicular recording media.

本文言語English
ページ(範囲)2458-2460
ページ数3
ジャーナルIEEE Transactions on Magnetics
40
4 II
DOI
出版ステータスPublished - 2004 7
外部発表はい

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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