Glassy alloy composites for information technology applications

N. Nishiyama, K. Takenaka, N. Togashi, H. Miura, N. Saidoh, Akihisa Inoue

研究成果: Article査読

23 被引用数 (Scopus)

抄録

With the aim of developing a novel preparation process for bit-patterned-media, nano-patterned glassy alloy composite composed of zero-magneto-striction Co-Fe-B amorphous alloy thin film, Pd-Cu-Ni-P glassy alloy and Co/Pd multi-layer with perpendicular magnetization was prepared. Using the commercial imprinting mold, periodic nano hole array with a hole diameter of 90 nm and a pitch of 180 nm was successfully prepared on the surface of Pd-based glassy alloy thin film. By overlaying the Co/Pd multi-layer with perpendicular magnetization and surface polishing, isolated Co/Pd magnetic dots embedded into nano hole array can be obtained. These magnetic dots act as single magnetic domains. In addition, the change in magnetization direction was confirmed under magnetic fields of ±20 kOe. These results suggest that the glassy alloy nano-composite is suitable for BPM of high data density HDD. It is therefore concluded that the preparation method is candidate process for the preparation of BPM of high data density HDD.

本文言語English
ページ(範囲)1983-1987
ページ数5
ジャーナルIntermetallics
18
10
DOI
出版ステータスPublished - 2010 10

ASJC Scopus subject areas

  • Chemistry(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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