Simultaneous Electrochemical Deposition for Fabrication of Magnetic Shape Memory Alloys

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Student Presentation

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Dale Russell


Magnetic Shape Memory Alloys (MSMAs) offer great promise as micromachines. The shape of the alloy changes with application of an applied voltage. The original shape is restored when the voltage is removed. Application of varying voltage causes elongation or other movement of the MSMA, and can be programmed, permitting controllable, functional motion of the part. Previous MSMAs have been made by chemical vapor deposition. In this work, an electrochemical deposition method for preparing MSMAs from solution phase mixture of the desired metals is demonstrated. The advantages of electrochemical deposition are lower cost, waste reduction, and simplicity. The ability to deposit electrochemically also permits precise location of the MSMA on integrated circuit components with minimal waste. Manganese, gallium, and nickel form an MSMA, but have very different solution conditions for optimum deposition onto a substrate. Currently, a single solution has not been demonstrated to be effective in co-deposition of these metals. Because of this, ligand-assisted electrochemical deposition from a single solution is being explored. Optimization of this method is underway and progress will be reported.

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