Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9953551 | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms | 2018 | 5 Pages |
Abstract
The topographic evaluation of the nano-scale pattern, on ZnO (001) surface, and its scaling properties have been investigated here after low energy atom beam irradiation. Preferential sputtering promotes the formation of Zn-rich zones near the surface that serve as the nucleation centers for the spontaneous nanostructure growth. The rms roughness (Ï) however increases with irradiation fluence and displays power law behaviour, Ïâ¼tβ, for ttc, Ï is independent of irradiation time but interestingly follows the power law behaviour Ïâ¼Lα, where L is the size of image used in analysis. The morphology of the surfaces has also been investigated using the height-height correlation and power spectral density methods. The observed values of growth (β) and roughness (α) exponents indicate a scaling behavior that is induced by the disordered but well-defined geometry of the nanostructures.
Related Topics
Physical Sciences and Engineering
Materials Science
Surfaces, Coatings and Films
Authors
Vanaraj Solanki, D. Kabiraj, D.K. Avasthi, Shikha Varma,