Preparation of high magnetic flux density CoNiFeB film by electroless deposition for application to magnetic recording devices

M. Yoshino, Y. Kikuchi, A. Sugiyama, T. Osaka*

*この研究の対応する著者

研究成果: Article査読

15 被引用数 (Scopus)

抄録

A CoNiFeB soft magnetic thin film with high saturation magnetic flux density (Bs) for use as a magnetic recording head core material or as a soft magnetic underlayer of a double perpendicular magnetic recording medium was prepared by electroless deposition. When the CoNiFeB alloy thin film was deposited on a evaporated Cu (100 nm thick)/glass substrate, the saturated magnetic flux density was found to increase up to 2.0 T by increasing the concentration of FeSO4. The coercivity (Hc) was found to decrease to 6 Oe while the saturated magnetic flux density was maintained higher than 1.8 T by optimizing the concentrations of tartaric acid and citric acid in the electroless plating solution. An X-ray diffraction (XRD) study showed that the intensity of the assigned peak in the bcc (1 1 0) of CoNiFeB film decreased as the concentration of tartaric acid was decreased. Moreover, the coercivity of the CoNiFeB film formed on a NiFe substrate exhibits lower coercivity than that formed on a Cu substrate.

本文言語English
ページ(範囲)285-289
ページ数5
ジャーナルElectrochimica Acta
53
2
DOI
出版ステータスPublished - 2007 12月 1

ASJC Scopus subject areas

  • 化学工学一般
  • 電気化学

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