SmCO5-based thin films with high magnetic anisotropy for perpendicular magnetic recording

Junichi Sayama*, Kazuki Mizutani, Yuki Yamashita, Toru Asahi, Tetsuya Osaka


研究成果: Article査読

17 被引用数 (Scopus)


An investigation was carried out on the effects of the addition of Cu and the thickness of the SmCo5 -based thin film with perpendicular magnetic anisotropy upon its magnetic properties, with the aim of reducing the Cu/Ti underlayer thickness. As a result, the Cu/Ti under-layer thickness necessary to obtain the squareness ratio of unity was successfully reduced from 125 to 50 nm. Moreover, for the SmCo5 double-layered perpendicular magnetic recording media with a CoZrNb soft magnetic underlayer, the Cu/Ti underlayer thickness was further reduced to 35 nm. However, the magnetic cluster size and the values of coercivity and saturation field of the SmCo5 media were found to be too large. Thus, we recognized the need for adjusting the cluster size and the magnetic properties to appropriate values, and also the need for investigating the possibility of using this material as patterned media or thermally assisted recording media.

ジャーナルIEEE Transactions on Magnetics
出版ステータスPublished - 2005 10月

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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