Abstract
In this communication, we report a synthetic approach to fabricate Y-junction Co nanowires and Y-junction Cu nanowires by AC electrodeposition using a hierarchically designed anodized aluminum oxide template. Morphology study showe that diameters of the stems and branches of the Y-junction nanowires were about 40 nm and 20 nm respectively. Structural analysis indicates that Co nanowires had a mixture of face-center-cubic and hexagonal-close-packed structures, whereas Cu nanowires had a face-center-cubic structure with a <110> texture. The Y-junction Co nanowires exhibited a longitudinal coercivity of 1300 Oe and remnant magnetization of 56%, which was affected by the growth direction and microstructure. The present method can be extended to other metallic systems and thus provides a simple and efficient way to fabricate Y-junction metal nanowires.
Highlights
Metal nanowires (NWs) have attracted vigorous research interests in recent years [1,2,3,4,5,6,7,8,9,10,11]
A typical synthesis process by direct current (DC) electrodeposition is as following: firstly, the anodic aluminum oxide (AAO) templates are separated from the Al substrate; after the removal of the barrier layer, the templates are coated with a thin layer of noble metal to make an electrode; target metal is deposited into the templates by DC electrodeposition
We report a generic synthetic approach to fabricate Y-junction metallic NWs including Co NWs and Cu NWs by alternate current (AC) electrodeposition using AAO templates with
Summary
Metal nanowires (NWs) have attracted vigorous research interests in recent years [1,2,3,4,5,6,7,8,9,10,11]. In applications such as nanoelectronics where nanowires with more complicated structure, such as Y-junction or branched NWs, are desirable, AAO template-assisted fabrication offers a simple and efficient method for the preparation of Y-junction metal NWs. in the past few years, a few reports were available on the synthesis of Y-junction carbon nanotubes [12,13] and metallic
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