Synthesis, electrical and magnetic characterization of core-shell silicon carbo-nitride coated carbon nanotubes

Gurpreet Singh, Shashank Priya, Maria R. Hossu, Sandeep R. Shah, Sachit Grover, Ali R. Koymen, Roop L. Mahajan

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

We demonstrate synthesis, electrical and magnetic characterization of silicon carbo-nitride (SiCN) coated multiwalled carbon nanotubes in a core-shell structure. The core formed by a carbon nanotube had a diameter in the range of 10-100 nm. The shell was synthesized by pyrolysis of an SiCN precursor on the surface of carbon nanotubes. Electrical resistivity of an individual composite nanotube was measured to be ~ 2.55 × 103 Ω cm. The magnetic measurements performed by a superconducting quantum interference device on the composite nanotubes in the temperature range of 5-300 K show a reduced coercive field with increasing temperatures. The monolayer thick coating of an ultra high temperature multifunctional ceramic SiCN makes these composite nanotubes very promising for sensing applications in harsh environments.

Original languageEnglish (US)
Pages (from-to)2435-2438
Number of pages4
JournalMaterials Letters
Volume63
Issue number28
DOIs
StatePublished - Nov 30 2009

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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