65 citations · 120 across the 7 of their papers we have counts for
7 papers
Flux dependent 1.5 MeV self-ion beam induced sputtering from Gold nanostructured thin films
J. Ghatak, B. Sundaravel, K. G. M. Nair +1
We discuss four important aspects of 1.5 MeV Au2+ ion-induced flux dependent sputtering from gold nanostrcutures (of an average size 7.6 nm and height 6.9 nm) that are deposited on…
Ion beam induced enhanced diffusion from gold thin films in silicon
J. Ghatak, B. Sundaravel, K. G. M. Nair +1
Enhanced diffusion of gold atoms into silicon substrate has been studied in Au thin films of various thicknesses (2.0, 5.3, 10.9 and 27.5 nm) deposited on Si(111) and followed by i…
Flux dependent MeV self-ion- induced effects on Au nanostructures: Dramatic mass transport and nano-silicide formation
J. Ghatak, M. Umananda Bhatta, B. Sundaravel +5
We report a direct observation of dramatic mass transport due to 1.5 MeV Au2+ ion impact on isolated Au nanostructures of an average size 7.6 nm and a height 6.9 nm that are deposi…
Ferromagnetism in cobalt doped n-GaN
S. Dhara, B. Sundaravel, K. G. M. Nair +5
Ferromagnetic ordering is reported in the post-annealed samples of Co doped n-GaN formed by Co+ implantation. A maximum Curie temperature ~ 250K is recorded for the sample with 8 a…
Blueshift of plasmon resonance with decreasing cluster size in Au nanoclusters embedded in silica matrix
S. Dhara, B. Sundaravel, T. R. Ravindran +3
Gold nanoclusters are grown by 1.8 MeV Au++ implantation in silica matrix and subsequent air annealing in the temperature range of 873K-1273K. Post-annealed samples show plasmon re…
'Spillout' effect in gold nanoclusters embedded in c-Al2O3(0001) matrix
S. Dhara, B. Sundaravel, T. R. Ravindran +5
Gold nanoclusters are grown by 1.8 MeV Au^\sup{2+} implantation on c-Al\sub{2}O\sub{3}(0001)substrate and subsequent air annealing at temperatures 1273K. Post-annealed samples show…