Enhanced susceptibility of CaF2(111) to adsorption due to ion irradiation

被引：6
|
作者：
Akcoeltekin, S. [1 ]
Roll, T. [1 ]
Akcoeltekin, E. [1 ]
Klusmann, M. [1 ]
Lebius, H. [2 ]
Schleberger, M. [1 ]
机构：
[1] Univ Duisburg Essen, Fachbereich Phys, D-47048 Duisburg, Germany
[2] GANIL, CIMAP, F-14070 Caen 5, France
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2009年 / 267卷 / 04期
关键词：
Surface modifications; Ion irradiation; Atomic force microscopy; CaF2; ATOMIC-FORCE-MICROSCOPY; WATER-ADSORPTION; CAF2; SURFACE; TRACKS; NANODOTS;
D O I：
10.1016/j.nimb.2008.11.056
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
We have investigated morphological changes of freshly cleaved CaF2(111) single crystal surfaces before and after ion irradiation. We show that with or without irradiation the surface undergoes serious changes within minutes after the cleavage if the samples are exposed to ambient conditions. This is most likely due to the adsorption of water and could be avoided only if working under clean ultra-high-vacuum conditions. Ion-induced modifications on this surface seem to act as centers for an increased rate of adsorption so that any quantitative numbers obtained by atomic force microscopy in such experiments have to be treated with caution. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：683 / 686
页数：4
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