| Autor: |
Yen-Fa Liao, Tzu-Wen Huang, Kuan-Li Yu, Chih-Hao Lee |
| Rok vydání: |
2007 |
| Předmět: |
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| Zdroj: |
Journal of Applied Crystallography. 40:s480-s484 |
| ISSN: |
0021-8898 |
| DOI: |
10.1107/s0021889807005390 |
| Popis: |
The structural stability and coalescence of self-assembled FePt monolayer nanoparticles on functional substrates with/without an Au overlayer during annealing were studied. From X-ray diffraction and the anomalous grazing-incidence small-angle X-ray scattering techniques, the nanoparticles were found to be intact under the annealing process when a 5–10 nm overlayer of Au was deposited on top of FePt monolayer nanoparticles. From the simulation result, the particle size 4.5 ± 0.5 nm is typically unchanged, but the distance between particles is reduced from 7.5 ± 1.5 nm to 5.5 ± 1.1 nm after annealing. The results suggest that the 5 nm Au coverlayer is an effective diffusing barrier layer to prevent the FePt nanoparticles from sintering during the annealing process. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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