Crater formation in gold nanoislands due to mev self-ion irradiation

Satyam, P. V. ; Kamila, J. ; Mohapatra, S. ; Satpati, B. ; Goswami, D. K. ; Dev, B. N. ; Cook, R. E. ; Assoufid, Lahsen ; Wang, J. ; Mishra, N. C. (2003) Crater formation in gold nanoislands due to mev self-ion irradiation Journal of Applied Physics, 93 (10). pp. 6399-6401. ISSN 0021-8979

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The modification of gold nanoislands, grown on silicon substrates under high-vacuum conditions, by MeV self-ion irradiation has been studied by using scanning electron microscopy, transmission electron microscopy, atomic force microscopy, and x-ray reflectivity. Upon irradiation with 1.5MeVAu2+, two types of craters are observed on the Au islands: Empty craters and craters with a central hillock. The contribution of plastic flow, pressure spike, and sputtering to the crater formation during the ion impacts on the gold islands is analyzed. Thermal spike confinement within the gold islands is also proposed to be one of the possible reasons for crater formation in nanoislands.

Item Type:Article
Source:Copyright of this article belongs to American Institute of Physics.
Keywords:Gold; Surface Structure; Nanostructured Materials; Discontinuous Metallic Thin Films; Ion Beam Effects; Scanning Electron Microscopy; Transmission Electron Microscopy; Atomic Force Microscopy; X-ray Reflection; Plastic Flow; Sputtering
ID Code:10043
Deposited On:02 Nov 2010 10:03
Last Modified:16 May 2016 19:43

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