Surface Nanostructuring of LiNbO3 by High-Density Electronic Excitations
Surface Nanostructuring of LiNbO3 by High-Density Electronic Excitations
El-Said, A. S.; Wilhelm, R. A.; Facsko, S.; Trautmann, C.
Lithium niobate (LiNbO3) single crystals were irradiated with high energy gold ions (0.5-2.2 GeV) at the UNILAC (GSI) and with 150-keV highly charged Xenon ions from an EBIT (Electron Beam Ion Trap, HZDR). The surfaces of the irradiated crystals were analyzed by scanning force microscopy showing very similar topographic changes. Swift heavy ions and slow highly charged ions produce hillock-like surface nanostructures on this surface. In both cases, the energy deposition of the ions is characterized by dense localized electronic excitations and efficient transfer to the lattice. Furthermore, the irradiation results in a shift in the band gap energy as evidenced by UV-Vis absorption spectroscopy. Specific modifications (e.g. hillock size, energy loss threshold) induced by slow highly charged ions are discussed in comparison with effects due to the electronic energy loss by swift heavy ions.
Involved research facilities
- Ion Beam Center DOI: 10.17815/jlsrf-3-159
Related publications
- DOI: 10.17815/jlsrf-3-159 is cited by this (Id 17999) publication
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Poster
25th International Conference on Atomic Collisions in Solids (ICACS), 21.-25.10.2012, Kyoto, Japan -
Nuclear Instruments and Methods in Physics Research B 315(2013), 265-268
DOI: 10.1016/j.nimb.2013.03.008
Cited 14 times in Scopus
Permalink: https://www.hzdr.de/publications/Publ-17999