Fabrication of SmCo5 double-layered perpendicular magnetic recording media

Tetsuya Osaka, Yuki Yamashita, Junichi Sayama, Toru Asahi, Jun Ariake, Kiko Harada, Kazuhiro Ouchi

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

We fabricated SmCo5 double-layered perpendicular magnetic recording media with high perpendicular magnetic anisotropy for realizing ultra high density recording. A double-layered medium with a Ru buffer layer introduced between a Cu/Ti intermediate layer and a Co-Zr-Nb soft magnetic underlayer exhibited high perpendicular magnetic anisotropy, whereas that without the Ru buffer layer did not. Auger electron spectroscopy revealed that the Ru buffer layer inhibited interdiffusion between the Cu/Ti intermediate layer and the Co-Zr-Nb soft magnetic underlayer. We report here for the first time the read-write characteristics of SmCo5 double-layered perpendicular magnetic recording media. The medium noise was small in the medium with a Sm-Co layer deposited under high Ar gas pressure owing to small magnetic clusters.

Original languageEnglish
Pages (from-to)2109-2111
Number of pages3
JournalIEEE Transactions on Magnetics
Volume43
Issue number6
DOIs
Publication statusPublished - 2007 Jun

Fingerprint

Magnetic recording
magnetic recording
Buffer layers
Magnetic anisotropy
Fabrication
fabrication
buffers
Auger electron spectroscopy
Gases
anisotropy
Auger spectroscopy
gas pressure
electron spectroscopy
samarium cobalt
recording

Keywords

  • Cu/Ti intermediate layer
  • Double-layered medium
  • Perpendicular magnetic recording
  • Ru buffer layer
  • SmCo thin film

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Physics and Astronomy (miscellaneous)

Cite this

Fabrication of SmCo5 double-layered perpendicular magnetic recording media. / Osaka, Tetsuya; Yamashita, Yuki; Sayama, Junichi; Asahi, Toru; Ariake, Jun; Harada, Kiko; Ouchi, Kazuhiro.

In: IEEE Transactions on Magnetics, Vol. 43, No. 6, 06.2007, p. 2109-2111.

Research output: Contribution to journalArticle

Osaka, Tetsuya ; Yamashita, Yuki ; Sayama, Junichi ; Asahi, Toru ; Ariake, Jun ; Harada, Kiko ; Ouchi, Kazuhiro. / Fabrication of SmCo5 double-layered perpendicular magnetic recording media. In: IEEE Transactions on Magnetics. 2007 ; Vol. 43, No. 6. pp. 2109-2111.
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