Fabrication of SmCo5-CrTa granular films

A. Sugiyama, I. Koizumi, Y. Egawa, M. Yoshino, J. Hokkyo, T. Asahi, T. Osaka*

*この研究の対応する著者

研究成果査読

2 被引用数 (Scopus)

抄録

A Sm-Co-CrTa granular layer between a Sm-Co continuous layer and a Cu underlayer was prepared in order to improve magnetic properties and magnetic reversal process of Sm-Co perpendicular film. A phase of CrTa alloy in Sm-Co-CrTa layer has a role in control of Cu partial interlayer diffusion between the Sm-Co continuous layer and the Cu underlayer. The Cu diffusion provides the partial crystallization of SmCo5in the continuous layer. Although the perpendicular coercivity of films decreased slightly by introducing the CrTa alloy into Sm-Co layer, the magnetic intergranular exchange interaction in the films was drastically improved. Size of average magnetic cluster became smaller and magnetization reversal process was changed from a wall-motion to a coherent rotation for increasing the thickness ratio of Sm-Co-CrTa/Sm-Co layers. We confirmed that an addition of Sm-Co-CrTa layer is effective to reduce the intergranular exchange interaction in Sm-Co perpendicular films without deterioration of perpendicular magnetic anisotropy.

本文言語English
論文番号5467454
ページ(範囲)1699-1701
ページ数3
ジャーナルIEEE Transactions on Magnetics
46
6
DOI
出版ステータスPublished - 2010 6

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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