Abstract
The ongoing miniaturization of multifunctional electronic consumer products demands for cost-efficient production of functional metal and alloy structures. Recently, an electrochemical method of structuring by means of magnetic gradient fields has been introduced for metal deposition. Here, not only the structured deposition of the metals Co and Fe is presented, but it is further demonstrated that this method can be applied to structure alloys. This is shown for the industrially highly relevant magnetic CoFe alloy. Deposits with maximum layer thickness in regions of high magnetic gradients are formed and the chemical composition of the alloy is constant across the structure. Electrochemical quartz crystal microbalance studies revealed that in applied magnetic gradient fields the current efficiency for alloy deposition is significantly increased with respect to that for hydrogen reduction in the additive free sulphate based electrolyte used in this study.
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