Magnetic Fe-Co films electroplated in a deep-eutectic-solvent-based plating bath

We fabricated Fe-Co films from a deep eutectic solvent (DES)-based plating bath and investigated magnetic properties of the plated films. The plating baths were obtained by stirring the mixture of choline chloride, ethylene glycol, FeCl2·4H2O, and CoCl2·6H2O. The composition of the plated films depe...

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Bibliographic Details
Published in:Journal of applied physics 2015-05, Vol.117 (17)
Main Authors: Yanai, T., Shiraishi, K., Watanabe, Y., Ohgai, T., Nakano, M., Suzuki, K., Fukunaga, H.
Format: Article
Language:English
Subjects:
Choline
Cobalt
Coercivity
Composition
Current efficiency
Electroplating
Ethylene glycol
High current
Iron chlorides
Magnetic properties
Magnetic saturation
Magnetization
Nickel
Plating baths
Process planning
Solvents
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Summary:We fabricated Fe-Co films from a deep eutectic solvent (DES)-based plating bath and investigated magnetic properties of the plated films. The plating baths were obtained by stirring the mixture of choline chloride, ethylene glycol, FeCl2·4H2O, and CoCl2·6H2O. The composition of the plated films depended on the amount of FeCl2·4H2O in the plating bath, and Fe content of the films was varied from 0 to 100 at. %. Depending on the Fe content, the saturation magnetization and the coercivity of the films varied. The Fe76Co24 film shows high saturation magnetization and smooth surface, and the change in the saturation magnetization shows good agreement with the expected change by the Slater-Pauling curve. High current efficiency (>90%) could be obtained in the wide film composition. From these results, we concluded that the DES-based plating bath is one of effective baths for the Fe-Co films with high current efficiency.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.4918782