Influence of Transition Percolation on Media Noise in Perpendicular Double Layered Media

Mitsuhiro Hashimoto, Kenji Miura, Hiroaki Muraoka, Hajime Aoi, Yoshihisa Nakamura

研究成果: Article査読

12 被引用数 (Scopus)

抄録

Medium noise of perpendicular double layer media is investigated in conjunction with transition irregularity. The noise is typically proportional to the square root of linear density, but it saturates at a particular density. This nonlinear noise behavior is explained by clusters consisting of several grains becoming minimum magnetic units. A simulation with a media model using Voronoi cells is carried out based on this result; it also gives good agreement with experimental results. Measured partial erasure quantitatively corresponds to the noise saturation. Clustering and partial erasure both suggest transition percolation; however, no supra-linear noise increase is usually observed. Noise characteristics in terms of percolation density suggest grain-clustering in perpendicular media.

本文言語English
ページ(範囲)2624-2626
ページ数3
ジャーナルIEEE Transactions on Magnetics
39
5 II
DOI
出版ステータスPublished - 2003 9

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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