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

Authors :: Yanai, T.
Shiraishi, K.
Watanabe, Y.
Ohgai, T.
Nakano, M.
Suzuki, K.
Fukunaga, H.
Source :: Journal of Applied Physics; 2015, Vol. 117 Issue 17, p17A925-1-17A925-4, 4p, 2 Diagrams, 2 Charts, 5 Graphs
Publication Year :: 2015
Abstract: 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, FeCl<subscript>2</subscript>·4H<subscript>2</subscript>O, and CoCl<subscript>2</subscript>·6H<subscript>2</subscript>O. The composition of the plated films depended on the amount of FeCl<subscript>2</subscript>·4H<subscript>2</subscript>O 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 Fe<subscript>76</subscript>Co<subscript>24</subscript> 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. [ABSTRACT FROM AUTHOR]

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