Crater formation in gold nano-islands due to MeV self-ion irradiation.

Journal Article · · J. Appl. Phys. ; 93(10, pt. 1): 6399-401

OSTI ID:15003800

Satyam, P V; Kamila, J; Mahapatra, S; Satpati, B; Goswami, D K; Dev, B N; Cook, R E; Assoufid, L; Narayanan, S; Wang, J; Mishra, N M; MSD,; XFD,

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 1.5 MeV Au{sup 2+}, 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.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS); Inst. of Physics; Utkal Univ.
• Sponsoring Organization: USDOE
• DOE Contract Number: W-31-109-ENG-38
• OSTI ID: 15003800
• Journal Information: J. Appl. Phys. ; 93(10, pt. 1): 6399-401, Vol. 93, Issue 10 pt. 1; Related Information: May 15, 2003; ISSN 0021-8979
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

36 MATERIALS SCIENCE
77 NANOSCIENCE AND NANOTECHNOLOGY
GOLD
NANOSTRUCTURES
SUBSTRATES
SILICON
IRRADIATION
ION BEAMS
GOLD IONS
CRATERS
advanced photon source