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The structural evolution of graphene/Fe(110) systems upon annealing

Vinogradov, N. A. LU orcid ; Simonov, K. A. LU ; Generalov, A. V. LU ; Drnec, J. ; Carlà, F. ; Vinogradov, A. S. ; Preobrajenski, A. B. LU ; Mårtensson, N. LU and Felici, R. (2017) In Carbon 111. p.113-120
Abstract

The thermal stability and the structural evolution of graphene grown on Fe(110) has been studied upon annealing in ultra-high vacuum conditions (UHV, P ≤ 10−9 mbar) and in the presence of gaseous ethylene at a pressure of ∼10−6 mbar by grazing incidence X-ray diffraction. It was observed that upon annealing at temperatures below 630 °C, graphene on Fe is thermally stable. Exposure to ethylene at these temperatures promotes the formation of graphene while inhibiting its deterioration. Annealing graphene/Fe(110) at temperatures above 630 °C results in a fast degradation of graphene followed by carburization of the sample, that is the irreversible formation of various iron carbides, with the most common phases being... (More)

The thermal stability and the structural evolution of graphene grown on Fe(110) has been studied upon annealing in ultra-high vacuum conditions (UHV, P ≤ 10−9 mbar) and in the presence of gaseous ethylene at a pressure of ∼10−6 mbar by grazing incidence X-ray diffraction. It was observed that upon annealing at temperatures below 630 °C, graphene on Fe is thermally stable. Exposure to ethylene at these temperatures promotes the formation of graphene while inhibiting its deterioration. Annealing graphene/Fe(110) at temperatures above 630 °C results in a fast degradation of graphene followed by carburization of the sample, that is the irreversible formation of various iron carbides, with the most common phases being Fe3C (cementite) and Fe7C3 (Eckström-Adcock carbide). Annealing of the carburized sample does not result in the formation of a detectable graphitic structure.

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author
; ; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Carbon
volume
111
pages
8 pages
publisher
Elsevier
external identifiers
  • scopus:84989313067
  • wos:000389555500014
ISSN
0008-6223
DOI
10.1016/j.carbon.2016.09.058
language
English
LU publication?
yes
id
8304bb91-3db2-439a-84b7-b4a0dbeaa486
date added to LUP
2016-10-19 09:47:14
date last changed
2025-01-12 13:27:53
@article{8304bb91-3db2-439a-84b7-b4a0dbeaa486,
  abstract     = {{<p>The thermal stability and the structural evolution of graphene grown on Fe(110) has been studied upon annealing in ultra-high vacuum conditions (UHV, P ≤ 10<sup>−9</sup> mbar) and in the presence of gaseous ethylene at a pressure of ∼10<sup>−6</sup> mbar by grazing incidence X-ray diffraction. It was observed that upon annealing at temperatures below 630 °C, graphene on Fe is thermally stable. Exposure to ethylene at these temperatures promotes the formation of graphene while inhibiting its deterioration. Annealing graphene/Fe(110) at temperatures above 630 °C results in a fast degradation of graphene followed by carburization of the sample, that is the irreversible formation of various iron carbides, with the most common phases being Fe<sub>3</sub>C (cementite) and Fe<sub>7</sub>C<sub>3</sub> (Eckström-Adcock carbide). Annealing of the carburized sample does not result in the formation of a detectable graphitic structure.</p>}},
  author       = {{Vinogradov, N. A. and Simonov, K. A. and Generalov, A. V. and Drnec, J. and Carlà, F. and Vinogradov, A. S. and Preobrajenski, A. B. and Mårtensson, N. and Felici, R.}},
  issn         = {{0008-6223}},
  language     = {{eng}},
  month        = {{01}},
  pages        = {{113--120}},
  publisher    = {{Elsevier}},
  series       = {{Carbon}},
  title        = {{The structural evolution of graphene/Fe(110) systems upon annealing}},
  url          = {{http://dx.doi.org/10.1016/j.carbon.2016.09.058}},
  doi          = {{10.1016/j.carbon.2016.09.058}},
  volume       = {{111}},
  year         = {{2017}},
}