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Electrochemical Synthesis of Magnetostrictive Fe–Ga/Cu Multilayered Nanowire Arrays with Tailored Magnetic Response

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Abstract:

Abstract

Arrays of nanowires are fabricated with alternating segments of the magnetostrictive alloy Fe1–x Ga x and Cu using electrochemical deposition in nanoporous anodic aluminium oxide (AAO) templates. The difficult nature of Ga‐alloy electrochemistry is overcome by controlling mass‐transfer and hydrodynamic conditions using novel rotating disk electrode templates to obtain highly uniform segment lengths throughout the arrays. Extensive structural characterization by XRD, EBSD and TEM reveals a strong <110> textured Fe1–x Ga x growth. Furthermore, using vibrating sample magnetometry (VSM), we demonstrate that control of magnetization reversal processes is possible once uniform aspect ratios are obtained for both the Fe–Ga and Cu segments.

Document Type: Research Article

DOI: https://doi.org/10.1002/adfm.201101390

Affiliations: 1: Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, USA 2: Aerospace Engineering, University of Maryland, College Park, Maryland 20742, USA 3: Electrical and Computer Engineering, Chemical Engineering and Materials Science, 4-174 Keller Hall, 200 Union Street SE, University of Minnesota, Minneapolis, Minnesota 55455, USA

Publication date: 2011-12-20

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