Electrochemical synthesis of magnetostrictive Fe-Ga/Cu multilayered nanowire arrays with tailored magnetic response

Sai Madhukar Reddy, Jung Jin Park, Suok Min Na, Mazin M. Maqableh, Alison B. Flatau, Bethanie J Stadler

Research output: Contribution to journalArticlepeer-review

67 Scopus citations

Abstract

Arrays of nanowires are fabricated with alternating segments of the magnetostrictive alloy Fe 1-xGa 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-xGa 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.

Original languageEnglish (US)
Pages (from-to)4677-4683
Number of pages7
JournalAdvanced Functional Materials
Volume21
Issue number24
DOIs
StatePublished - Dec 20 2011

Keywords

  • iron-gallium (Fe-Ga) alloys
  • magnetic multilayers
  • magnetic nanowires
  • magnetic reversal

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