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

N. A. Vinogradov; K. A. Simonov; A. V. Generalov; J. Drnec; F. Carlà; A. S. Vinogradov; A. B. Preobrajenski; N. Mårtensson; R. Felici

doi:10.1016/j.carbon.2016.09.058

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

N. A. Vinogradov, K. A. Simonov, A. V. Generalov, J. Drnec, F. Carlà, A. S. Vinogradov, A. B. Preobrajenski, N. Mårtensson, R. Felici

MAX IV Laboratory

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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 Fe₃C (cementite) and Fe₇C₃ (Eckström-Adcock carbide). Annealing of the carburized sample does not result in the formation of a detectable graphitic structure.

Original language	English
Pages (from-to)	113-120
Number of pages	8
Journal	Carbon
Volume	111
DOIs	https://doi.org/10.1016/j.carbon.2016.09.058
Publication status	Published - 2017 Jan 1

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Other Materials Engineering

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10.1016/j.carbon.2016.09.058

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title = "The structural evolution of graphene/Fe(110) systems upon annealing",

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 Fe3C (cementite) and Fe7C3 (Eckstr{\"o}m-Adcock carbide). Annealing of the carburized sample does not result in the formation of a detectable graphitic structure.",

author = "Vinogradov, {N. A.} and Simonov, {K. A.} and Generalov, {A. V.} and J. Drnec and F. Carl{\`a} and Vinogradov, {A. S.} and Preobrajenski, {A. B.} and N. M{\aa}rtensson and R. Felici",

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doi = "10.1016/j.carbon.2016.09.058",

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T1 - The structural evolution of graphene/Fe(110) systems upon annealing

AU - Vinogradov, N. A.

AU - Simonov, K. A.

AU - Generalov, A. V.

AU - Drnec, J.

AU - Carlà, F.

AU - Vinogradov, A. S.

AU - Preobrajenski, A. B.

AU - Mårtensson, N.

AU - Felici, R.

PY - 2017/1/1

Y1 - 2017/1/1

N2 - 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.

AB - 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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VL - 111

SP - 113

EP - 120

JO - Carbon

JF - Carbon

ER -

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

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