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Paper   IPM / Physic / 15320
School of Physics
  Title:   The effect of initial pressure on growth of FeNPs in amorphous carbon films
  Author(s): 
1.  F. Mashayekhi
2.  A. Shafiekhani
3.  S.A. Sebt
4.  E. Darabi
  Status:   Published
  Journal: International Nano Letters
  Vol.:  8
  Year:  2018
  Pages:   25-30
  Supported by:  IPM
  Abstract:
Iron nanoparticles in amorphous hydrogenated carbon films (FeNPs@ aC: H) were prepared with RF-sputtering and RFPECVD methods by acetylene gas and Fe target. In this paper, deposition and sputtering process were carried out under influence of different initial pressure gas. The morphology and roughness of surface of samples were studied by AFM technique and also TEM images show the exact size of FeNPs and encapsulated FeNPs@ aC: H. The localized surface plasmon resonance peak (LSPR) of FeNPs was studied using UV-vis absorption spectrum. The results show that the intensity and position of LSPR peak are increased by increasing initial pressure. Also, direct energy gap of samples obtained by Tauc law is decreased with respect to increasing initial pressure.

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