Structural and magnetic properties of high saturation induction CoNiFe electroplated films

N. Ohshima*, M. Saito, K. Ohashi, H. Yamamoto, K. Mibu

*この研究の対応する著者

研究成果査読

5 被引用数 (Scopus)

抄録

The structure and saturation induction (Bs) of Co90-xNi10Fex (8 ≤ x ≤ 40) electroplated films have been studied with a view to their use as high-density write-core materials. The Bs of the films were slightly larger than those of CoNiFe powders and were increased into the 1.8 to 2.1 T range by controlling the Fe composition and the amount of bcc phase. The latter was achieved by controlling the plating conditions, i.e., the current density and bath temperature. The hyperfine field of the films was about 34 T, slightly larger than that of the powders (33 T), suggesting that their magnetic moments were slightly larger than those of equivalent bulk alloys. The Bs values were increased by increases of the amount of bcc phase relative to the equilibrium phase with increasing the magnetic moments. A band calculation showed that the bcc phase had a larger magnetization than the fcc phase although the difference between the total energies of the two phases was fairly small. This confirmed our results.

本文言語English
ページ(範囲)1767-1769
ページ数3
ジャーナルIEEE Transactions on Magnetics
37
4 I
DOI
出版ステータスPublished - 2001 7
外部発表はい
イベント8th Joint Magnetism and Magnetic Materials -International Magnetic Conference- (MMM-Intermag) - San Antonio, TX, United States
継続期間: 2001 1 72001 1 11

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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