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Electrochemical Synthesis of Magnetostrictive Fe–Ga/Cu Multilayered Nanowire Arrays with Tailored Magnetic Response
Author(s) -
Reddy Sai Madhukar,
Park Jung Jin,
Na SuokMin,
Maqableh Mazin M.,
Flatau Alison B.,
Stadler Bethanie J. H.
Publication year - 2011
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201101390
Subject(s) - materials science , nanoporous , nanowire , alloy , electrochemistry , magnetometer , magnetostriction , magnetization , aluminium , electrode , template , nanotechnology , composite material , magnetic field , chemistry , physics , quantum mechanics
Arrays of nanowires are fabricated with alternating segments of the magnetostrictive alloy Fe 1– 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 Fe 1– 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.