Raman spectroscopy study of Ar+ bombardment in highly oriented pyrolytic graphite

被引：30

作者：

Jorio, Ado ^{[1
,2
]}

Lucchese, Marcia M. ^{[2
]}

Stavale, Fernando ^{[2
]}

Achete, Carlos A. ^{[2
]}

机构：

[1] Univ Fed Minas Gerais, Dept Fis, BR-30123970 Belo Horizonte, MG, Brazil

[2] Inst Nacl Metrol Normalizacao & Qualidade Ind INM, Div Mat Metrol, BR-25250020 Duque De Caxias, RJ, Brazil

来源：

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 2009年 / 246卷 / 11-12期

关键词：

VACANCY;

D O I：

10.1002/pssb.200982314

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

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 densityof-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. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

引用

页码：2689 / 2692

页数：4

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