Co–Based Soft Magnetic Films Produced by Electroless Deposition

T. Osaka; T. Homma; K. Saito; A. Takekoshi; Y. Yamazaki; T. Namikawa

doi:10.1149/1.2069402

Co–Based Soft Magnetic Films Produced by Electroless Deposition

T. Osaka, T. Homma, K. Saito, A. Takekoshi, Y. Yamazaki, T. Namikawa

Research output: Contribution to journal › Article › peer-review

39 Citations (Scopus)

Abstract

On the basis of our work on electroless CoB soft magnetic films with high saturation magnetization (Ms) and low coercivity (He) the effects of applying an external field during deposition and of adding Fe to the CoB binary system were investigated in order to improve the soft magnetic properties. When an external field (560 G) is applied, the He of deposited CoB films decreases from 1.20 Oe to 0.64 Oe. In the case of CoFeB ternary alloy films, FeSO4 is added to the CoB bath and its concentration is varied from 0.001 to 0.05 mol dm^–3. The best soft magnetic properties, He = 0.72 Oe and Ms = 1180 emu cc, are obtained when the film is deposited from the bath containing 0.0025 mol dm³ of FeSO4. The film had a small magnetostriction value (–4.4 x 10 ⁷) and higher permeability. The results of structural analysis suggest that the film consists of fine–particulated hexagonal close–packed crystallite with high crystallinity.

Original language	English
Pages (from-to)	1311-1314
Number of pages	4
Journal	Journal of the Electrochemical Society
Volume	139
Issue number	5
DOIs	https://doi.org/10.1149/1.2069402
Publication status	Published - 1992 May

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Renewable Energy, Sustainability and the Environment
Surfaces, Coatings and Films
Electrochemistry
Materials Chemistry

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title = "Co–Based Soft Magnetic Films Produced by Electroless Deposition",

abstract = "On the basis of our work on electroless CoB soft magnetic films with high saturation magnetization (Ms) and low coercivity (He) the effects of applying an external field during deposition and of adding Fe to the CoB binary system were investigated in order to improve the soft magnetic properties. When an external field (560 G) is applied, the He of deposited CoB films decreases from 1.20 Oe to 0.64 Oe. In the case of CoFeB ternary alloy films, FeSO4 is added to the CoB bath and its concentration is varied from 0.001 to 0.05 mol dm–3. The best soft magnetic properties, He = 0.72 Oe and Ms = 1180 emu cc, are obtained when the film is deposited from the bath containing 0.0025 mol dm3 of FeSO4. The film had a small magnetostriction value (–4.4 x 10 7) and higher permeability. The results of structural analysis suggest that the film consists of fine–particulated hexagonal close–packed crystallite with high crystallinity.",

author = "T. Osaka and T. Homma and K. Saito and A. Takekoshi and Y. Yamazaki and T. Namikawa",

year = "1992",

month = may,

doi = "10.1149/1.2069402",

language = "English",

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T1 - Co–Based Soft Magnetic Films Produced by Electroless Deposition

AU - Osaka, T.

AU - Homma, T.

AU - Saito, K.

AU - Takekoshi, A.

AU - Yamazaki, Y.

AU - Namikawa, T.

PY - 1992/5

Y1 - 1992/5

N2 - On the basis of our work on electroless CoB soft magnetic films with high saturation magnetization (Ms) and low coercivity (He) the effects of applying an external field during deposition and of adding Fe to the CoB binary system were investigated in order to improve the soft magnetic properties. When an external field (560 G) is applied, the He of deposited CoB films decreases from 1.20 Oe to 0.64 Oe. In the case of CoFeB ternary alloy films, FeSO4 is added to the CoB bath and its concentration is varied from 0.001 to 0.05 mol dm–3. The best soft magnetic properties, He = 0.72 Oe and Ms = 1180 emu cc, are obtained when the film is deposited from the bath containing 0.0025 mol dm3 of FeSO4. The film had a small magnetostriction value (–4.4 x 10 7) and higher permeability. The results of structural analysis suggest that the film consists of fine–particulated hexagonal close–packed crystallite with high crystallinity.

AB - On the basis of our work on electroless CoB soft magnetic films with high saturation magnetization (Ms) and low coercivity (He) the effects of applying an external field during deposition and of adding Fe to the CoB binary system were investigated in order to improve the soft magnetic properties. When an external field (560 G) is applied, the He of deposited CoB films decreases from 1.20 Oe to 0.64 Oe. In the case of CoFeB ternary alloy films, FeSO4 is added to the CoB bath and its concentration is varied from 0.001 to 0.05 mol dm–3. The best soft magnetic properties, He = 0.72 Oe and Ms = 1180 emu cc, are obtained when the film is deposited from the bath containing 0.0025 mol dm3 of FeSO4. The film had a small magnetostriction value (–4.4 x 10 7) and higher permeability. The results of structural analysis suggest that the film consists of fine–particulated hexagonal close–packed crystallite with high crystallinity.

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JO - Journal of the Electrochemical Society

JF - Journal of the Electrochemical Society

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ER -

Co–Based Soft Magnetic Films Produced by Electroless Deposition

Abstract

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