Influence of Underlayer on Growth of Carbon Nanotubes Filled with Iron Nanowires

• Kubonaka Nobuo

  Department of Electrical and Electronic Engineering, Graduate School of Engineering, Mie University

• Sato Hideki

  Department of Electrical and Electronic Engineering, Graduate School of Engineering, Mie University

• Fujiwara Yuji

  Department of Physics Engineering, Graduate School of Engineering, Mie University

Abstract

Carbon nanotubes filled with iron nanowires (Fe@CNTs) show magnetic anisotropy because of the high aspect ratio of the nanowires and are expected to find numerous applications such as magnetic recording media, probes for scanning force microscopy and medical treatment for cancer (hyperthermia). These applications require precise control of Fe@CNT growth. This growth depends on the condition of the substrate surface on which the CNTs are grown. In this study, Fe@CNTs were synthesized by thermal chemical vapor deposition on various thin metal films (Fe, Ni, Co, Al, Pt, Ti, or Mo) deposited on SiO₂/Si(100) substrates using ferrocene as a precursor, and their growth characteristics were investigated. The growth clearly depends on the metal species incorporated in the thin films. Magnetic properties correlated with growth morphologies. Therefore, the appropriate selection of an underlayer is important for controlling magnetic characteristics of Fe@CNTs. [DOI: 10.1380/ejssnt.2015.295]

Journal

• e-Journal of Surface Science and Nanotechnology

  e-Journal of Surface Science and Nanotechnology 13 (0), 295-300, 2015

  The Japan Society of Vacuum and Surface Science

Keywords

• Carbon Nanotube
• Iron Nanowires and Nanotubes
• Magnetic Properties
• Coercivity
• Chemical Vapor Deposition

Details

• CRID: 1390001205186145664
• NII Article ID: 130005076096
• DOI: 10.1380/ejssnt.2015.295
• ISSN: 13480391
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed