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Raman spectroscopy study of Ar + bombardment in highly oriented pyrolytic graphite
Author(s) -
Jorio Ado,
Lucchese Marcia M.,
Stavale Fernando,
Achete Carlos A.
Publication year - 2009
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200982314
Subject(s) - highly oriented pyrolytic graphite , raman spectroscopy , ion , pyrolytic carbon , materials science , graphite , graphene , spectroscopy , highly charged ion , analytical chemistry (journal) , atomic physics , chemistry , nanotechnology , physics , ion source , optics , organic chemistry , chromatography , quantum mechanics , pyrolysis , composite material
In this work, we discuss the effect of low energy Ar + ion bombardment on highly oriented pyrolytic graphite (HOPG). The evolution of the G and D peak intensities are analyzed as a function of ion dose, as well as the evolution of a broad density‐of‐states (DOS)‐like background. For low ion doses, a small D band is observed. It increases and finally gives place to the broad DOS‐like feature. The I D / I G analysis clearly shows three distinct regimes. No frequency shifts are observed, indicating sp 2 bondings are mostly preserved. Comparison between preliminary work on single‐layer graphene and HOPG shows the effect observed in HOPG is limited to the top surface.