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Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2012

Growth of glass-embedded Cu nanoparticles: A low-frequency Raman scattering study

Résumé

Several populations of Cu spherical nanoparticles grown in a silicate glass at different temperatures with respect to the glass transition temperature were studied using high-resolution, low-frequency Raman scattering and optical absorption. The analysis of the spectra shows that the annealing of the doped glass at temperatures close to T-g leads to the formation of metallic copper nanoparticles with high crystallinity, whereas lower-temperature and higher-temperature annealings result in the formation of poorer nanoparticle assemblies in terms of size distribution and/or nanocrystallinity. It is also shown that in the case where the optical data do not unambiguously reveal the presence of metallic Cu nanoparticles, the Raman probe enables us to probe their presence as a result of the resonance process.
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Dates et versions

hal-00742360 , version 1 (16-10-2012)

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S. Sirotkin, E. Cottancin, L. Saviot, E. Bernstein, A. Mermet. Growth of glass-embedded Cu nanoparticles: A low-frequency Raman scattering study. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2012, 85, pp.205435. ⟨10.1103/PhysRevB.85.205435⟩. ⟨hal-00742360⟩
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