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Electrodeposition of Ni-Fe-Co alloy nanowire in modified AAO template

Saedi, A ; Sharif University of Technology | 2005

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  1. Type of Document: Article
  2. DOI: 10.1016/j.matchemphys.2004.12.001
  3. Publisher: 2005
  4. Abstract:
  5. Anodic aluminum oxide (AAO) was used as a template to prepare highly ordered Ni-Fe-Co alloy nanowire arrays. This membrane was fabricated with two-step anodizing method. It is found that there is an optimum barrier thickness to obtain a successful electrodeposition in pores of AAO. The thickness of barrier layer can be modified by additional electrochemical process after completing the anodizing step. Barrier layer thinning can create a rooted structure at the bottom side of the AAO pores and the electrodeposited nanowire arrays. The triple Ni-Fe-Co alloy was deposited in AAO membrane by ac voltage in a simple sulfate bath. The composition of nanowires shows anomalous deposition features between these ions. The difference of Ni2+, Fe2+ and Co2+ ion's diffusion rate can cause composition difference between nanowires that are deposited in membranes with various pore depths and a composition gradient along a single nanowire. © 2004 Elsevier B.V. All rights reserved
  6. Keywords:
  7. Anodic oxidation ; Arrays ; Diffusion ; Electric potential ; Electrochemical corrosion ; Electrodeposition ; Electron microscopy ; Fabrication ; Ions ; Magnetic properties ; Nanostructured materials ; Anodic aluminum oxides (AAO) ; Nanostructures ; Nanowire arrays ; Template synthesis ; Nickel alloys
  8. Source: Materials Chemistry and Physics ; Volume 91, Issue 2-3 , 2005 , Pages 417-423 ; 02540584 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S0254058404006480