Magnetic nanodiscs fabricated from multilayered nanowires

Ji Hyun Min, Ji Ung Cho, Boo Hyun An, Daniel S. Choi, Young Keun Kim

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

We report a simple, high throughput synthesis method of producing magnetic nanodiscs, in which the diameter and thickness are easily controlled. This method consists of two steps: (1) Electrodeposition for growing multilayered nanowires and (2) Selective etching of sacrificial layers. The electrodeposition step results in a bundle of multilayered nanowires. The nanowires consist of alternating layers of magnetic (e.g., Co) and sacrificial materials (e.g., Cu) inside the nanometer-sized pores of an anodized aluminum oxide (AAO) template. The diameter of each layer is determined by pore size, while the thickness is controlled by electrodeposition time. The selective wet etching step removes sacrificial layers, leaving the magnetic nanodiscs. Through this process, the magnetic nanodiscs are fabricated with aspect ratios ranging from 0.25 to 2.0.

Original languageBritish English
Pages (from-to)7923-7928
Number of pages6
JournalJournal of Nanoscience and Nanotechnology
Volume14
Issue number10
DOIs
StatePublished - 2014

Keywords

  • Electrodeposition
  • Magnetic material
  • Nanodisc
  • Nanowire
  • Selective etching

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