Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 21, Issue 24, Pages 4677-4683Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201101390
Keywords
iron-gallium (Fe-Ga) alloys; magnetic multilayers; magnetic nanowires; magnetic reversal
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Funding
- U.S. Office of Naval Research [ONR N00014-06-1-0530]
- National Science Foundation (NSF) via MRSEC and NNIN centers
- staff of the UMN Characterization Facility and Nanofabrication Center
- NanoCenter and its NispLab in University of Maryland
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [1000019] Funding Source: National Science Foundation
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Arrays of nanowires are fabricated with alternating segments of the magnetostrictive alloy Fe1xGax 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 Fe1xGax 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 FeGa and Cu segments.
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