Analysis of microstructures for Co/Pd multilayer perpendicular magnetic recording media with carbon underlayer

T. Asahi, K. Kuramochi, J. Kawaji, T. Onoue, T. Osaka, M. Saigo

研究成果: Conference article査読

37 被引用数 (Scopus)

抄録

The effect of amorphous carbon underlayer thickness on the microstructure of the Co/Pd multilayer perpendicular magnetic recording media was investigated. From the magnetic force microscopy observation in the AC-demagnetized state of the Co/Pd multilayer media, the magnetic cluster size was observed to effectively decrease with an increase in carbon underlayer thickness, where the higher coercivity and the higher S/N ratio of the Co/Pd multilayer media were obtained with the thicker underlayer. Furthermore, the distribution of [1 1 1] orientation of FCC-Pd became broader, and the grain size decreased with an increase in the carbon underlayer thickness. These effects caused the magnetic exchange decoupling of Co/Pd multilayer media. We suggested that the change of microstructure was directly related to the surface roughness of the amorphous carbon underlayer.

本文言語English
ページ(範囲)87-92
ページ数6
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
イベントProceedings of the 5th Perpendicular Magnetic Recording Conference (PMRC 2000) - Sendai, Japan
継続期間: 2000 10 232000 10 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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