| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1682387 | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms | 2015 | 4 Pages |
Abstract
Nanostructures (NS) have been fabricated on rutile TiO2(1Â 1Â 0) single crystal surfaces using Ar ion beam sputtering technique. Pronounced quantum confinement effects in TiO2 nanodots lead to reduction in optical reflectance and bandgap widening. Moreover, a direct correlation between the size of NS and magnetic behavior is observed. This suggests that the size of NS plays crucial role in the evolution of magnetic nature. Though the smallest (â¼5Â nm) NS display superparamagnetic (SPM) behavior, ferromagnetism is observed for larger nanostructures. Single domain nature of TiO2 quantum dots is responsible for the observed SPM behavior.
Related Topics
Physical Sciences and Engineering
Materials Science
Surfaces, Coatings and Films
Authors
Vanaraj Solanki, I. Mishra, S.R. Joshi, P. Mishra, P. Dash, N.C. Mishra, D. Kanjilal, Shikha Varma,