Abstract
MeV ions of Au and Cu were implanted into single crystals of MgO (100) and the formation of metallic nanoclusters was observed by an indirect method of optical absorption spectrophotometry. Using Mie's theory we related the observed optical absorption band to the formation of nanoclusters and using Doyle's theory, as well as Rutherford Backscattering Spectrometry (RBS), we correlated the full width half maximum (FWHM) of the absorption bands to the estimated size of the metallic nanoclusters between 1 and 10 nm. These clusters were formed by implantation above the threshold fluence for cluster formation and by a combination of threshold fluence of the implanted species and thermal annealing. The changes in the estimated size of the nanoclusters, after annealing at temperatures ranging from 500°C to 1000°C, were observed using optical absorption spectrophotometry and calculated using Doyle's theory.
| Original language | English |
|---|---|
| Pages (from-to) | 308-311 |
| Number of pages | 4 |
| Journal | Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms |
| Volume | 141 |
| Issue number | 1-4 |
| DOIs | |
| State | Published - May 1998 |
Funding
Research supported by the Center for Irradiation of Materials, Alabama A&M University, Alabama-EPSCoR-NSF Grant No. EHR-9108761/STI-9108761 and the Division of Materials Sciences, US Department of Energy, under contract DE-AC05-96OR22464 with Lockheed Martin Energy Research Corp.
| Funders | Funder number |
|---|---|
| Alabama A&M University | EHR-9108761/STI-9108761 |
| US Department of Energy | DE-AC05-96OR22464 |
| Division of Materials Sciences and Engineering |
Keywords
- Ion implantation
- Metal nanoclusters
- Nanoclusters