Templated Growth of Hexagonal Nickel Carbide Nanocrystals on Vertically Aligned Carbon Nanotubes (PREPRINT)

Abstract

Nanocrystals of hexagonal nickel carbide have been synthesized via physical vapor deposition of elemental nickel onto the surface of vertically aligned carbon nanotubes. Combining high resolution transmission electron microscopy (HRTEM) with three-dimensional atom probe tomography (3DAP) confirmed that these nanocrystals have a hexagonal structure, are enriched in carbon, and have a composition of ~Ni-25at%C (Ni3C). This metastable hexagonal nickel carbide phase appears to be stabilized due to the growth of the nanocrystals on the surface of the nanotubes that act as a template and also as a source of carbon. The stability of this nickel carbide phase has also been investigated by Density Functional Theory (DFT) calculations and compared to the experimental results.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2010
Accession Number
ADA522072

Entities

People

  • A. R. Singh
  • J. S. Tiley
  • J. Y. Hwang
  • Jinfeng Du
  • M. Chaudhari
  • R. Banerjee
  • Yupeng Zhu

Organizations

  • University of North Texas

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Carbon Nanotubes
  • Crystal Structure
  • Crystals
  • Density Functional Theory
  • Electron Microscopy
  • Fullerenes
  • High Resolution
  • Materials
  • Materials Processing
  • Materials Science
  • Microscopy
  • Physical Vapor Deposition
  • Three Dimensional
  • Transmission Electron Microscopy
  • Vapor Deposition

Fields of Study

  • Materials science

Readers

  • Microwave Engineering.
  • Nanocomposite Materials Science
  • Surface Engineering/Surface Coating Technology.

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene