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Nanowires are fabricated by template directed electrodeposition with multi-segmented nanowires with combined functionality. Five-segmented nanowires are developed in the sequence of: magnetic material, gold, sacrificial layer, gold, and magnetic material, to be used to create a nanogap electrode pair. The magnetic material was fabricated via pulsed electrodeposition of an alloy containing FeCoNi, the gold was deposited onto the FeCoNi, the sacrificial layer was Cu, and this layer was electrochemically etched in a citrate electrolyte that does not attack the other layers, particularly FeCoNi.

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