The morphology and magnetic properties of iron nanoclusters decorated multiwall carbon nanotubes

Umaima S.H. Al-Kindi, Salim H. Al-Harthi*, Myo T.Z. Myint, Htet H. Kyaw, Hisham M. Widatallah, Mohamed E. Elzain

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Vapor phase growth of magnetic nanoclusters on different substrates alters their physical, chemical, and magnetic properties. In this work, DC magnetron sputtering with inert gas condensation (IGC) technique was used to produce iron (Fe) based nanoclusters on multiwall carbon nanotubes (MWCNTs) and silicon (Si) substrates. For comparison, simple electron beam evaporation technique was used to deposit Fe on the same type of substrates. We observed that surface of the electron beam evaporation sample was oxidized from Fe to γ-Fe2O3 when exposed to air. IGC growth Fe/Si sample exhibited a magnetic negative exchange bias. Core level binding energy (BE) and the valance band maximum (VBM) shifts were affirmed the formation of a semi-metallic phase. There was substantial enhancement in the saturation magnetization in the IGC sample up to five times compared to the evaporated sample which can be applied to the magnetic applications.

Original languageEnglish
Article number112061
JournalMaterials Research Bulletin
Volume158
DOIs
Publication statusPublished - Feb 2023
Externally publishedYes

Keywords

  • composites
  • Electron transfer
  • FeO
  • MWCNTs
  • nanoclusters

ASJC Scopus subject areas

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

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