https://doi.org/10.1051/epjap/2016150508
Regular Article
Iron nanoparticles embedded in carbon films: structural and optical properties
1
Department of Physics, Science and Research Branch, Islamic Azad University, P.O. Box 14665-678, Tehran, Iran
2
Department of Physics, Alzahra University, Tehran, 1993893973, Iran
3
School of Physics, Institute for Research in Fundamental Sciences (IPM), P.O. Box: 19395-5531, Tehran, Iran
a e-mail: mashayekhi.fatemeh@yahoo.com
Received:
10
October
2015
Revised:
11
February
2016
Accepted:
17
May
2016
Published online:
24
June
2016
In the present work amorphous hydrogenated carbon films with sputtered iron nanoparticles (Fe NPs @ a-C:H) were deposited by co-deposition of RF-sputtering and RF-plasma enhanced chemical vapor deposition methods using acetylene gas and iron target on quartz and silicon substrates. Samples were prepared in different initial pressures and during constant deposition time. The crystalline structure of Fe NPs @ a-C:H was studied using X-ray diffraction and selected area electron diffraction patterns. The X-ray photoelectron spectroscopy analysis presents that increasing the initial pressure decreases the atomic ratio of Fe/C and the sp3-hybridized carbon content in prepared samples. The transmission electron microscope image shows the encapsulated Fe NPs in carbon films. The optical properties and localized surface plasmon resonance (LSPR) of samples were studied using UV-visible spectrophotometry, which is shown that increasing of Fe content decreases the intensity of LSPR peak and increases the optical band gap.
© EDP Sciences, 2016
