6533b824fe1ef96bd1280c12
RESEARCH PRODUCT
Growth of glass-embedded Cu nanoparticles: A low-frequency Raman scattering study
Alain MermetE. BernsteinSergey SirotkinEmmanuel CottancinLucien Saviotsubject
Materials scienceAnalytical chemistrychemistry.chemical_elementNanoparticle02 engineering and technologyMETAL NANOPARTICLES01 natural sciencesAnnealing (glass)symbols.namesakeCrystallinityCondensed Matter::Materials ScienceCUPROUS-OXIDE0103 physical sciencesSILICA010306 general physicsDopingCOPPER NANOPARTICLESOPTICAL-PROPERTIES[ PHYS.COND.CM-GEN ] Physics [physics]/Condensed Matter [cond-mat]/Other [cond-mat.other]021001 nanoscience & nanotechnologyCondensed Matter PhysicsCopperElectronic Optical and Magnetic MaterialsNANOCRYSTALSchemistry[PHYS.COND.CM-GEN]Physics [physics]/Condensed Matter [cond-mat]/Other [cond-mat.other]symbols0210 nano-technologyGlass transitionRaman spectroscopyMATRIXRaman scatteringdescription
International audience; 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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2012-05-18 |