Control of Permeability of CoB Soft Magnetic Films by Heat Treatment in a Magnetic Field.
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- OSAKA Tetsuya
- School of Sci. and Tech., Waseda Univ.
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- TAKAI Madoka
- School of Sci. and Tech., Waseda Univ.
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- KAGEYAMA Kensuke
- School of Sci. and Tech., Waseda Univ.
Bibliographic Information
- Other Title
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- CoB軟磁性膜の磁場中熱処理による透磁率の制御
- CoB ナン ジセイ マク ノ ジバチュウ ネツ ショリ ニ ヨル トウジリツ
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Abstract
An effort has been made to improve the properties and specifically the permeability μ, of CoB soft magnetic films produced by electroless plating by application of heat treatment in a 2 kOe magnetic field. The optimum treatment conditions were found to be 150°C for 30min with the field applied along the hard magnetization axis of the film, and this treatment increased μ to 2000. The magnetic anisotropy field Hk decreased from 40 Oe to 8 Oe. The microstructure of films treated at various temperatures was also investigated. As-plated films consisted of fine hcp crystallite grains about 100Å in diameter, and this was retained with treatment up to 300°C. At above 350°C, fine, uniform grains grew locally and the formation of an fcc phase was detected. It is suggested that the improvement in permeability was due to an appropriately low value of Hk for the conditions at which the fine crystal grains were retained.
Journal
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- Journal of The Surface Finishing Society of Japan
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Journal of The Surface Finishing Society of Japan 45 (2), 213-217, 1994
The Surface Finishing Society of Japan
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Details 詳細情報について
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- CRID
- 1390001204115568384
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- NII Article ID
- 130001072003
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- NII Book ID
- AN1005202X
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- ISSN
- 18843409
- 09151869
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- NDL BIB ID
- 3864097
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed