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

doi:10.1016/j.materresbull.2022.112061

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 journal › Article › peer-review

2 Citations (Scopus)

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 language	English
Article number	112061
Journal	Materials Research Bulletin
Volume	158
DOIs	https://doi.org/10.1016/j.materresbull.2022.112061
Publication status	Published - Feb 2023
Externally published	Yes

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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10.1016/j.materresbull.2022.112061

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title = "The morphology and magnetic properties of iron nanoclusters decorated multiwall carbon nanotubes",

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.",

keywords = "composites, Electron transfer, FeO, MWCNTs, nanoclusters",

author = "Al-Kindi, {Umaima S.H.} and Al-Harthi, {Salim H.} and Myint, {Myo T.Z.} and Kyaw, {Htet H.} and Widatallah, {Hisham M.} and Elzain, {Mohamed E.}",

note = "Funding Information: The authors would like to thank the Department of Physics, College of Science for facilities support and Electron Microscope Unit, College of medicine for their TEM measurement. Publisher Copyright: {\textcopyright} 2022 Elsevier Ltd",

year = "2023",

month = feb,

doi = "10.1016/j.materresbull.2022.112061",

language = "English",

volume = "158",

journal = "Materials Research Bulletin",

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AU - Al-Kindi, Umaima S.H.

AU - Al-Harthi, Salim H.

AU - Myint, Myo T.Z.

AU - Kyaw, Htet H.

AU - Widatallah, Hisham M.

AU - Elzain, Mohamed E.

N1 - Funding Information: The authors would like to thank the Department of Physics, College of Science for facilities support and Electron Microscope Unit, College of medicine for their TEM measurement. Publisher Copyright: © 2022 Elsevier Ltd

PY - 2023/2

Y1 - 2023/2

N2 - 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.

AB - 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.

KW - composites

KW - Electron transfer

KW - FeO

KW - MWCNTs

KW - nanoclusters

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

Abstract

Keywords

ASJC Scopus subject areas

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