Surface modifications of BaF                         2                          and CaF                         2                          single crystals by slow highly charged ions

A. S. El-Said; R. Heller; R. A. Wilhelm; S. Facsko; F. Aumayr

doi:10.1016/j.apsusc.2014.03.083

Surface modifications of BaF ₂ and CaF ₂ single crystals by slow highly charged ions

A. S. El-Said^*
, R. Heller
, R. A. Wilhelm
, S. Facsko
, F. Aumayr

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

Ion-irradiation of solid surfaces is considered as one of the promising and powerful techniques for material nanostructuring. Recently, slow highly charged ions (HCI) have shown their potential in creating surface nanostructures in various solids. Here, we focus on the surface modifications of BaF ₂ and CaF ₂ single crystals by HCI. Despite the fact that both materials belong to alkaline-earth fluorides with the same crystalline structure, they exhibit different sensitivity for HCI-induced nanostructure. We discuss similarities and differences for the creation of HCI-induced nanohillocks and etch pits in both materials and their dependence on potential and kinetic energy deposition. Furthermore, we compare the results with modifications induced by swift heavy ions (SHI), in order to reach a better understanding of the mechanisms responsible for the creation of nanostructures in ionic fluoride single crystals.

Original language	English
Pages (from-to)	169-173
Number of pages	5
Journal	Applied Surface Science
Volume	310
DOIs	https://doi.org/10.1016/j.apsusc.2014.03.083
State	Published - 15 Aug 2014

Bibliographical note

Funding Information:
The support by KACST (NSTIP project no. 11-NAN1650-04 ) and Alexander von Humboldt Foundation is greatly acknowledged. R.H. and R.A.W. acknowledge the Deutsche Forschungsgemeinschaft (DFG) for financial support (project-no. HE 6174/1-1). The authors thank G. Zschornack and A. Thorn for the access to the Dresden EBIS-A facility and their support. A.S.E thanks K. Schwartz for the fruitful discussions.

Keywords

Highly charged ions
Ion-surface interaction
Nanostructures

ASJC Scopus subject areas

Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films

Access to Document

10.1016/j.apsusc.2014.03.083

Cite this

El-Said, A. S., Heller, R., Wilhelm, R. A., Facsko, S., & Aumayr, F. (2014). Surface modifications of BaF ₂ and CaF ₂ single crystals by slow highly charged ions Applied Surface Science, 310, 169-173. https://doi.org/10.1016/j.apsusc.2014.03.083

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title = " Surface modifications of BaF 2 and CaF 2 single crystals by slow highly charged ions ",

abstract = " Ion-irradiation of solid surfaces is considered as one of the promising and powerful techniques for material nanostructuring. Recently, slow highly charged ions (HCI) have shown their potential in creating surface nanostructures in various solids. Here, we focus on the surface modifications of BaF 2 and CaF 2 single crystals by HCI. Despite the fact that both materials belong to alkaline-earth fluorides with the same crystalline structure, they exhibit different sensitivity for HCI-induced nanostructure. We discuss similarities and differences for the creation of HCI-induced nanohillocks and etch pits in both materials and their dependence on potential and kinetic energy deposition. Furthermore, we compare the results with modifications induced by swift heavy ions (SHI), in order to reach a better understanding of the mechanisms responsible for the creation of nanostructures in ionic fluoride single crystals.",

keywords = "Highly charged ions, Ion-surface interaction, Nanostructures",

author = "El-Said, \{A. S.\} and R. Heller and Wilhelm, \{R. A.\} and S. Facsko and F. Aumayr",

note = "Funding Information: The support by KACST (NSTIP project no. 11-NAN1650-04 ) and Alexander von Humboldt Foundation is greatly acknowledged. R.H. and R.A.W. acknowledge the Deutsche Forschungsgemeinschaft (DFG) for financial support (project-no. HE 6174/1-1). The authors thank G. Zschornack and A. Thorn for the access to the Dresden EBIS-A facility and their support. A.S.E thanks K. Schwartz for the fruitful discussions.",

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El-Said, AS, Heller, R, Wilhelm, RA, Facsko, S & Aumayr, F 2014, ' Surface modifications of BaF ₂ and CaF ₂ single crystals by slow highly charged ions ', Applied Surface Science, vol. 310, pp. 169-173. https://doi.org/10.1016/j.apsusc.2014.03.083

Surface modifications of BaF ₂ and CaF ₂ single crystals by slow highly charged ions . / El-Said, A. S.; Heller, R.; Wilhelm, R. A. et al.
In: Applied Surface Science, Vol. 310, 15.08.2014, p. 169-173.

Research output: Contribution to journal › Article › peer-review

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T1 - Surface modifications of BaF 2 and CaF 2 single crystals by slow highly charged ions

AU - El-Said, A. S.

AU - Heller, R.

AU - Wilhelm, R. A.

AU - Facsko, S.

AU - Aumayr, F.

N1 - Funding Information: The support by KACST (NSTIP project no. 11-NAN1650-04 ) and Alexander von Humboldt Foundation is greatly acknowledged. R.H. and R.A.W. acknowledge the Deutsche Forschungsgemeinschaft (DFG) for financial support (project-no. HE 6174/1-1). The authors thank G. Zschornack and A. Thorn for the access to the Dresden EBIS-A facility and their support. A.S.E thanks K. Schwartz for the fruitful discussions.

PY - 2014/8/15

Y1 - 2014/8/15

N2 - Ion-irradiation of solid surfaces is considered as one of the promising and powerful techniques for material nanostructuring. Recently, slow highly charged ions (HCI) have shown their potential in creating surface nanostructures in various solids. Here, we focus on the surface modifications of BaF 2 and CaF 2 single crystals by HCI. Despite the fact that both materials belong to alkaline-earth fluorides with the same crystalline structure, they exhibit different sensitivity for HCI-induced nanostructure. We discuss similarities and differences for the creation of HCI-induced nanohillocks and etch pits in both materials and their dependence on potential and kinetic energy deposition. Furthermore, we compare the results with modifications induced by swift heavy ions (SHI), in order to reach a better understanding of the mechanisms responsible for the creation of nanostructures in ionic fluoride single crystals.

AB - Ion-irradiation of solid surfaces is considered as one of the promising and powerful techniques for material nanostructuring. Recently, slow highly charged ions (HCI) have shown their potential in creating surface nanostructures in various solids. Here, we focus on the surface modifications of BaF 2 and CaF 2 single crystals by HCI. Despite the fact that both materials belong to alkaline-earth fluorides with the same crystalline structure, they exhibit different sensitivity for HCI-induced nanostructure. We discuss similarities and differences for the creation of HCI-induced nanohillocks and etch pits in both materials and their dependence on potential and kinetic energy deposition. Furthermore, we compare the results with modifications induced by swift heavy ions (SHI), in order to reach a better understanding of the mechanisms responsible for the creation of nanostructures in ionic fluoride single crystals.

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Surface modifications of BaF 2 and CaF 2 single crystals by slow highly charged ions